Constanze Mozart
Maria Constanze Cäcilia Josepha Johanna Aloysia Mozart (Weber; 5 January 1762 – 6 March 1842) was an Austrian soprano, later a businesswoman. She is best remembered as the wife of the composer Wolfgang Amadeus Mozart, who from the evidence of his letters was deeply in love with her throughout their nine-year marriage. Following her husband's sudden death in 1791, Constanze Mozart escaped poverty and supported her family through concertizing and promotion of her husband's memory; she was responsible in part for the extensive posthumous publication of her husband's works.
Also recorded as Maria Constanze Caecilia Josepha Johanna Aloisia Mozart · Constanze Weber · Maria Constanze Cäcilia Josepha Johanna Aloysia Weber · Constanze Nissen
Constanze Mozart

Hans Hansen · Public domain
- Full name
- Maria Constanze Caecilia Josepha Johanna Aloisia Weber.
- Born
- 1762. · Zell im Wiesental.
- Nationality
- Austrian Empire.
- Occupation
- opera singer and writer.
- Languages
- German, Russian and French.
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Maria Constanze Cäcilia Josepha Johanna Aloysia Mozart (Weber; 5 January 1762 – 6 March 1842) was an Austrian soprano, later a businesswoman. She is best remembered as the wife of the composer Wolfgang Amadeus Mozart, who from the evidence of his letters was deeply in love with her throughout their nine-year marriage. Following her husband's sudden death in 1791, Constanze Mozart escaped poverty and supported her family through concertizing and promotion of her husband's memory; she was responsible in part for the extensive posthumous publication of her husband's works.
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Early life
Early life
Constanze is also regarded, less positively, as a source of mythology concerning her husband's life, deriving in part from the biography she jointly wrote with her second husband, Georg Nikolaus von Nissen.
Constanze Weber was born on 5 January 1762 in Zell im Wiesental, a town near Lörrach (in present-day Baden-Württemberg, southwest Germany), then a Further Austrian territory in the Holy Roman Empire. Her mother was Cäcilia Weber (née Stamm), and her father, Fridolin Weber, worked as a "double bass player, prompter, and music copyist". Fridolin's half-brother was the father of composer Carl Maria von Weber. Constanze had two elder sisters, Josepha and Aloysia, and a younger sister, Sophie. All four were trained as singers and Josepha and Aloysia both went on to distinguished musical careers, later on performing in the premieres of a number of Mozart's works. During most of Constanze's upbringing, the family lived in her mother's hometown of Mannheim, an important cultural, intellectual and musical center. The 21-year-old Mozart visited Mannheim in 1777 on a job-hunting tour with his mother and developed a close relationship with the Weber family. He fell in love—not with 15-year-old Constanze, but with Aloysia. While Mozart was in Paris, Aloysia obtained a position as a singer in Munich, and the family accompanied her there. She rejected Mozart when he passed through Munich on his way back to Salzburg. The family moved to Vienna in 1779, again following Aloysia as she pursued her career. However, a month after their arrival, Fridolin died. By the time Mozart moved to Vienna in 1781, Aloysia had married Joseph Lange, who agreed to help Cäcilia Weber with an annual stipend; she also took in boarders to make ends meet. The house where the Webers lived (on the second floor) was at Am Peter 11, and bore a name (as houses often did at the time): Zum Auge Gottes ("God's Eye").
Marriage to Mozart
Marriage to Mozart
• Illustration — Detail of Lange's 1782–83 Mozart portrait On first arriving in Vienna on 16 March 1781, Mozart stayed at the house of the Teutonic Order with the staff of his patron, Archbishop Colloredo. In May, he "was obliged to leave", and chose to board in the Weber household, originally intending "to stay there only a week". After a while, it became apparent to Cäcilia Weber that Mozart was courting Constanze, now 19, and in the interest of propriety, she requested that he leave. Mozart moved out on 5 September to a third-floor room in the Graben. The courtship continued, but not entirely smoothly. Surviving correspondence indicates that Mozart and Constanze briefly broke up in April 1782, over an episode involving jealousy (Constanze had permitted another young man to measure her calves in a parlor game). Mozart also faced a very difficult task getting permission for the marriage from his father, Leopold. The marriage finally took place in an atmosphere of crisis. Daniel Heartz suggests that eventually Constanze moved in with Mozart, which would have placed her in disgrace by the mores of the time. Mozart wrote to Leopold on 31 July 1782, "All the good and well-intentioned advice you have sent fails to address the case of a man who has already gone so far with a maiden. Further postponement is out of the question." Heartz relates, "Constanze's sister Sophie had tearfully declared that her mother would send the police after Constanze if she did not return home [presumably from Mozart's apartment]." On 4 August, Mozart wrote to Baroness von Waldstätten, asking: "Can the police here enter anyone's house in this way? Perhaps it is only a ruse of Madame Weber to get her daughter back. If not, I know no better remedy than to marry Constanze tomorrow morning or if possible today." The marriage did indeed take place that day, 4 August 1782, in a side chapel of St. Stephen's Cathedral. In the marriage contract, Constanze "assigns to her bridegroom five hundred gulden which [...] the latter has promised to augment with one thousand gulden", with the total "to pass to the survivor". Further, all joint acquisitions during the marriage were to remain the common property of both. A day after the marriage took place, the consent of Wolfgang's father arrived in the mail. Constanze gave birth to six children in eight years, but only two of them survived infancy: • Raimund Leopold (17 June 1783 – 19 August 1783) • Karl Thomas Mozart (21 September 1784 – 31 October 1858) • Johann Thomas Leopold (18 October 1786 – 15 November 1786) • Theresia Constanzia Adelheid Friedericke Maria Anna (27 December 1787 – 29 June 1788) • Anna Maria (died soon after birth, 16 November 1789) • Franz Xaver Wolfgang Mozart (26 July 1791 – 29 July 1844)
Happiness of their marriage
Happiness of their marriage
During his trips to other cities, and during Constanze's trips to nearby Baden for medical treatment, the couple exchanged letters, of which a number of Mozart's survive. The letters are unfailingly affectionate, often intensely so; and at times they can also be solicitous, supervisory, erotic, or silly; the general sense they give is of a happy marriage. A letter written from Dresden on 16 April 1789 gives instances of both "supervisory" and "silly". Mozart gives Constanze a six-item list of requests, including "don't be sad", "take care of your health", and "be assured of my love"; "don't go out walking by yourself -- but best of all don't go out walking at all." He concludes: "I kiss you and squeeze you 1095060437082 times; this will help you to practice your pronunciation." A passage both silly and erotic was written on the same journey, from Berlin on 23 May 1789, as Mozart was anticipating his homeward journey: On June 1st I'll sleep in Prague, and on the 4th -- the 4th? -- I'll be sleeping with my dear little wife;--Spruce up your sweet little nest because my little rascal here really deserves it, he has been very well behaved but now he's itching to possess your sweet [word erased by some unknown hand]. Just imagine that little sneak, while I am writing he has secretly crept up on the table and now looks at me questioningly; but I, without much ado, give him a little slap--but now he is even more [word erased by some unknown hand]; well, he is almost out of control, the scoundrel. No letters from Constanze to Wolfgang appear to have survived. However, in her old age she remembered her marriage to Mozart (as well as her later marriage to Nissen) as very happy; she wrote in a letter to a music teacher named Friedrich Schwaan (5 December 1829): "I have had two most excellent husbands by whom I was loved and honoured – even, I have to say, adored; they, too were both equally loved by me with the utmost tenderness, thus I was twice completely happy.”
After Mozart's death
After Mozart's death
• Illustration — Constanze in 1802, portrait by Hans Hansen Mozart died in 1791, leaving debts and placing Constanze in a difficult position. At this point Constanze's business skills came into fruition: she obtained a pension from the emperor, organized profitable memorial concerts, and embarked on a campaign to publish the works of her late husband. These efforts gradually made Constanze financially secure and ultimately wealthy. She sent Karl and Franz to Prague to be educated by Franz Xaver Niemetschek, with whom she collaborated on the first full-length biography of Mozart. Among Constanze's musical accomplishments in the years after Mozart's death was her promulgation of his late opera La Clemenza di Tito, which had been prepared for performance in Prague in 1791. She mounted a benefit performance on 29 December 1794 at the Kärntnertortheater in Vienna, with her sister Aloysia Weber taking the role of Sextus. Further performances followed, both in Vienna and other cities, in which Constanze herself sang, taking the role of Vitellia. Toward the end of 1797, she met Georg Nikolaus von Nissen, a Danish diplomat and writer who, initially, was her tenant. The two began living together in September 1798. In 1809 they traveled to Pressburg (today's Bratislava), at the time in Hungary, in order to be married legally (Nissen was Protestant, Constanze a Catholic, a barrier to marriage at the time in Austria). From 1810 to 1820, they lived in Copenhagen, and subsequently travelled throughout Europe, especially Germany and Italy. They settled in Salzburg in 1824. Both worked on a biography of Mozart; Constanze eventually published it in 1828, two years after her second husband's death. During Constanze's last years in Salzburg, she had the company of her two surviving sisters, Aloysia and Sophie, also widows, who moved to Salzburg and lived out their lives there.
Treatment by biographers
Treatment by biographers
According to the Grove Dictionary of Music and Musicians, Constanze has been treated harshly and unfairly by a number of her biographers: "Early 20th-century scholarship severely criticized her as unintelligent, unmusical and even unfaithful, and as a neglectful and unworthy wife to Mozart. Such assessments (still current) were based on no good evidence, were tainted with anti-feminism and were probably wrong on all counts." Complaints about unfairness to Constanze also appear in modern Mozart biographies by Braunbehrens (1990), Solomon (1995), and Halliwell (1998).
Life and career
Dated record
Life and career
The full dated record · 2 entries
1762
Constanze Mozart born at Zell im Wiesental.
1842
Constanze Mozart died at Salzburg.
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
Zell im Wiesental.
Birth place
Salzburg.
Death place
Alleged photograph
• Illustration — 1840 daguerreotype supposedly showing Constanze Mozart (see text for serious doubts), front left; Bavarian composer Max Keller (composer) centre front; to his left his wife, Josefa; left to right at the rear are the family cook; Keller's brother in law Philip Lattner; and Keller's daughters, Luise and Josefa. A photograph (daguerreotype), first brought to scholarly attention in 1958, has been claimed to show Constanze (Mozart) Nissen aged 78, two years before her death. The photo was supposedly taken in Altötting, Bavaria in October 1840 outside the home of composer Max Keller. Several Mozart scholars have rebutted this claim. First, the photograph could not have been taken outdoors, since the lenses required to produce such images were not invented by Joseph Petzval until after Constanze had died in 1842. Second, it is documented that Constanze was crippled from debilitating arthritis in her final years of life. Her biographer Agnes Selby suggested "There is absolutely no way she could have traveled to visit Maximillian Keller during the period when the photograph was taken. Contrary to the statements made in the newspaper, Constanze had no contact with Keller since 1826." Third, author and historian Sean Munger noted that Constanze would have been 78 years of age in 1840 and does not look that old in the picture.
Influences on Mozart's music
Influences on Mozart's music
• Illustration — Tombstone of Constanze Mozart, cemetery of Sebastian Church, Salzburg Constanze was a trained musician and played a role in her husband's career. Two instances can be given. The extraordinary writing for soprano solo in the Great Mass in C minor (for example, in the "Christe eleison" section of the Kyrie movement, or the aria "Et incarnatus est") was intended for Constanze, who sang in the 1783 premiere of this work in Salzburg. Maynard Solomon, in his Mozart biography, speculatively describes the work as a love offering. During the period of the couple's courtship, Mozart began making visits to Baron Gottfried van Swieten, who let him examine his extensive collection of manuscripts of works by Bach and Handel. Mozart was excited by this material, and a number of compositions show its influence on his own works. An important impetus was Constanze, who apparently had fallen in love with Baroque counterpoint. This is known from a letter Mozart wrote to his sister Nannerl on 20 April 1782. The letter was accompanied by a manuscript copy of the composer's Fantasy and Fugue, K. 394: I composed the fugue first and wrote it down while I was thinking out the prelude. I only hope that you will be able to read it, for it is written so very small; and I hope further that you will like it. Another time I shall send you something better for the clavier. My dear Constanze is really the cause of this fugue's coming into the world. Baron van Swieten, to whom I go every Sunday, gave me all the works of Händel and Sebastian Bach to take home with me (after I had played them to him). When Constanze heard the fugues, she absolutely fell in love with them. Now she will listen to nothing but fugues, and particularly (in this kind of composition) the works of Händel and Bach. Well, as she has often heard me play fugues out of my head, she asked me if I had ever written any down, and when I said I had not, she scolded me roundly for not recording some of my compositions in this most artistically beautiful of all musical forms and never ceased to entreat me until I wrote down a fugue for her. In the same letter, Mozart briefly mentions Constanze at the beginning, telling his sister that Constanze urged him to write this letter to her: My dear Konstanze has finally summoned the courage to follow the impulse of her good heart – namely to write to you, my dear sister. – If you will honour her |: and indeed I hope you will, so that I can read her pleasure over it on the brow of this good creature –:| if you will honour her with an answer, I would ask you to send your letter to me as an enclosure. – I write this only as a precaution so that you know that her mother and her sisters know nothing about her writing to you. – It goes on at the very end, with a response from Constanze, writing to Nannerl. Most esteemed and most precious friend! I would never have been so bold as to write forthrightly to you, most esteemed friend, of my inclinations and longings or [50] to place them in your hands, had not your esteemed brother assured me that you would not take umbrage at this step, which happens out of too great a desire to converse, at least in writing, with a person who, although unknown to me, is yet most valuable to me because of the name Mozart. – [55] Should you become angry if I am so bold as to say to you that you are precious and – beloved – to me above all else, madam, for no other reason than your being the sister of a brother so worthy of you, and if I dare – to ask you for your friendship: – without being proud, I may say that I half deserve it, and wholly deserving – is what I shall strive to become! – [60] May I offer you mine |: which I have already long since given to you secretly, madam, in my heart:| in return? – Oh, I indeed hope so! – and in this hope I remain, Esteemed and precious friend, your most obedient servant and friend, Constanza Weber
Legacy
Legacy
The Royal Conservatory of Brussels conserves several autograph documents from Constanze Mozart, including letters to her son Franz Xaver Wolfgang Mozart, as well as a small illustrated Album de Souvenirs, dated 1789 but covering the 1801–1823 period in which she collects memories, impressions and poems.

Foto/Photo von/of Constanze Mozart
Karl Klemens della Croce · Stadtarchiv Altoetting

Constanze Mozart, wife of Wolfgang Amadeus Mozart, at 78 years of age, pictured front left in black 2 years before her death. (Her maiden name was Weber). Bavarian composer Max Keller is seated center front, and to his left is his wife Josefa. From left to right in rear: family cook, Philip Lattner (Keller's brother-in-law), Keller's daughters Luise and Josefa. The print is a 19th-century copy o
Karl Clemens della Croce · bbc
Primary material
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- Wikidata, structured authority record Q84464: Constanze Mozart
Reputable secondary · Wikidata
- “Constanze Mozart”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
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- VIAF cluster 12345861 for Constanze Mozart, aggregating national library name authorities.
General reference · OCLC
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Grove, article "Mozart", section 4
- 2.Solomon, 1995, p=
- 3.Heartz (2009:47)
- 4.Mozart Day by Day – 1783 , Mozarteum
- 5.Mozart Day by Day – 1786 , Mozarteum
- 6.Mozart Day by Day – 1787 , Mozarteum
- 7.Mozart Day by Day – 1788 , Mozarteum
- 8.Mozart Day by Day – 1789, Mozarteum
- 9.For a substantial selection, with translations into vernacular English, see Spaethling (2000). Online, some excerpts are available, for example, The Marginalian, Interlude, and London Review of Books.
- 10.Spaethling (2000:408)
- 11.Spaethling (2000:411)
- 12.Mozarteum Salzburg: Official website, accessed 2025.
- 13.Griffin, Lynne. The Book of Women. Bob Adams, Inc. 5. 1992. 1-55850-106-1.
- 14.Wolff, 2012, p=8}}, citing , writes, "Constanze, who survived the composer by more than a half-century and upon her death in 1842 still left her two sons a major fortune of some 30,000 florins in cash, bonds, and savings accounts – all based on earnings from Mozart's music,"
- 15.Robins, Brian. La Clemenza di Tito: Mozart's Operatic Failure?. Early Music World (from Goldberg Early Music Magazine no.52). 2008.
- 16.Grove nonspecific, September 2019
- 17.Michael Lorenz: Agnes Selby: Constanze, Mozart's Beloved (Wien: Hollitzer Wissenschaftsverlag 2013). 19 May 2014.
- 18.Letter of 20 April 1782, text after Schiller Institute (retrieved 2025). Not all scholars take Mozart at his word; he had a motivation to exaggerate Constanze's refinement and taste, since Leopold was strongly opposed to his son marrying her (see ; ).
- 19.Letter of 20 April 1782, text after https://dme.mozarteum.at/DME/objs/raradocs/transcr/pdf_eng/0668_WAM_Nannerl_1782 (retrieved 2026)
- 20.The earlier critics accused of unfairness variously include Alfred Einstein, Wolfgang Hildesheimer, and .
- 21.Mueller von Asow, E. H. "Zu einer unbekannten Photographie Constanze Mozarts.", Österreichische Musikzeitschrift 13 (1958): 93–95.
- 22.Chris Pasles. Photo of Mozart's wife a hoax. Los Angeles Times. July 16, 2006.
- 23.Rosie Pentreathr. 10 Mozart myths. 27 January 2016.
- 24.Sean Munger. Historic photo, and a mystery: is this Mozart's wife?. History, Music. February 23, 2014.
- 25.Jean-Lucien Hollenfeltz Fund, B-Bc-FH-163
Bibliography printed in the source article · 9
- Braunbehrens, Volkmar (1986) Mozart in Vienna: 1781–1791, Timothy Bell Trans, HarperPerennial.
- Carr, Francis (1983) Mozart & Constanze. London: Murray. (1983)
- Davenport, Marcia (1932) Mozart, The Chautauqua Press.
- Einstein, Alfred. Mozart: His Character, His Work. Oxford University Press. 1945.
- Gärtner, Heinz (1991) Constanze Mozart: after the Requiem. Portland: Amadeus Press (1991)
- Glover, Jane (2005) Mozart's Women.
- Hildesheimer, Wolfgang. Mozart. Suhrkamp. 1982. 3-518-37098-7.
- Selby, Agnes. Constanze, Mozart's Beloved. Turton & Armstrong. November 1999. 0-908031-71-8.
- Servatius, Viveca, Constanze Mozart. Eine Biographie. Böhlau Verlag 2018.
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