William John Hennessy
William John Hennessy (11 July 1839 – 27 December 1917) was an Irish-American artist. • Illustration — The Dandelion Clock by William John Hennessy
Also recorded as William J. Hennessy · William Hennessy · Hennessy · W. J. Hennessy
William John Hennessy

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- Name
- William John Hennessy
- Born
- 11 July 1839
- Birthplace
- Thomastown, County Kilkenny, Ireland
- Died
- 27 December 1917
- Place of death
- Rudgwick, Sussex, England
- Nationality
- Ireland
- Occupation
- painter
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William John Hennessy (11 July 1839 – 27 December 1917) was an Irish-American artist. • Illustration — The Dandelion Clock by William John Hennessy
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wikidata · Q2579174 · wikipedia · William John Hennessy
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Key facts
Key facts
• Name — William John Hennessy • Born — 11 July 1839 • Birthplace — Thomastown, County Kilkenny, Ireland • Died — 27 December 1917 • Place of death — Rudgwick, Sussex, England
Life
Life
William John Hennessy (originally Ó hAonghusa) was born in Thomastown, County Kilkenny on 11 July 1839. His father, John Hennessy, was forced to leave Ireland in 1848 as a result of his involvement in the Young Ireland movement. He landed in Canada and settled in New York City. Hennessy, his mother Catherine (née Laffin), and brother joined their father there in July 1849. He gained admittance to the National Academy of Design in 1854 and exhibited his first works there. Hennessy was very skilled in wood engraving and was hired to illustrate the works of renowned poets, including that of Tennyson, Longfellow and Whittier. As an American he became the co-founder of the Artists' Fund Society, and an honorary member of the American Society of Painters in Watercolours. In 1870 he moved to London where he became a member of the Royal Institute of Oil Painters in 1902. Between 1879 and 1907 the Royal Hibernian Academy displayed eight of his paintings. He moved to Normandy in 1875, and continued to visit London frequently. He returned to England in 1893 to live in Brighton, and later Rudgwick, Sussex but visited France often. He died in Rudgwick on 27 December 1917.
Family
Family
He was married around 1868 to Charlotte Mather (1842-1940), from New Haven, Connecticut, a descendant of the old New England Mather family, and had by her four children: • Marguerite "Moya" (1868-1941) married Léon de Janzé (1848-1910) at the Château de Parfondeval, France. They were the parents of sportsman and writer Frédéric de Janzé. • Eleanor "Norah" (1872-1958) married in 1915 Paul Ayshford Methuen, 4th Baron Methuen (1886-1974), at Corsham Court. • Philip (1873-1954). • Kathleen.

An etching of the painting "En Fete, Calvados" by W.J. Hennessy
William John Hennessy/Levytype Co.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1839
William John Hennessy was born in 1839 at Thomastown.
1917
William John Hennessy died in 1917.
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reference work
- “William John Hennessy”, English Wikipedia, consulted as further reading
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authority record
- Wikidata, structured authority record Q2579174: William John Hennessy
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General reference
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 17 August 2026.
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