Horatio Walter Lonsdale

• Name — Horatio Walter Lonsdale • Birthplace — Mexico • Place of death — London • Notable Works — * Saint Fin Barre's Cathedral • Church of Christ the Consoler • Cardiff Castle • Castell Coch • Mount Stuart House

Lonsdale was born in Mexico in 1845 or 1846. After training as an architect, Lonsdale established a long partnership with the architect William Burges, working with him as his principal artist on many of Burges's major commissions, including Saint Fin Barre's Cathedral, Cardiff Castle, Castell Coch and the Yorkshire churches. Lonsdale worked so closely with Burges, particularly in the design of stained glass, that "it is often hard to say how much of any given design is Burges's and how much is (Lonsdale's) — designs were often initialled by both." He also designed the zodiac windows and celestial ceiling at Mount Stuart House and the silver casket in which the heart of Burges's great patron, John Crichton-Stuart, 3rd Marquess of Bute was transported to Jerusalem for burial in 1900. Burges's biographer, Joseph Mordaunt Crook, summed up Lonsdale's career; "a draughtsman of exceptional precision, his best work was all for Burges. Without the master's control, much of his later work tends to be mechanical and vapid.”

An exhibition of Lonsdale's work, organised by the Yale Center for British Art, was held at Gallery Lingard in 1984. In 2013/2014, an exhibition titled Searching For A New Jerusalem at the Lewis Glucksman Gallery in University College Cork presented cartoons by Lonsdale for the stained glass windows in Saint Fin Barre's Cathedral. An Irish stamp was issued in 2021 to mark the 150th anniversary of the disestablishment of the Church of Ireland in 1871. The stamp featured a detail of the cartoon by Lonsdale of the Sun, Moon and Stars panel for one of the stained glass windows in Saint Fin Barre's Cathedral. A collection of Lonsdale illustrations and cartoons, for the decoration of Mount Stuart House on the Isle of Bute where it is held, was catalogued in 2022. In the same year, an exhibition held at the house, Fantasy to Fabrication: 19th century design at Mount Stuart, included examples of Lonsdale's art. Lonsdale was a member of the Royal Academy.

• Illustration — Design for stained glass in St Nicholas and St Cyriacus, South Pool, Devon (1885). Now in the Metropolitan Museum of Art • Illustration — Banqueting Hall at Castell Coch, Wales • Illustration — West window of St Michael's Church, Brighton (1895) • Illustration — Stained glass in the East window of St Fachtna's Cathedral, Rosscarbery, Ireland (1907) • Illustration — Design for stained glass for a church in Simsbury, Connecticut (1908). Now in the Metropolitan Museum of Art • Illustration — The second light of the west window of St Matthias' Church, Brighton (1917)