James Thornhill

Sir James Thornhill (1675/1676–1734) was an English painter born in Melcombe Regis (now part of Weymouth), Dorset, who became the only native-born English artist to achieve major success in the field of Baroque decorative painting — a domain otherwise dominated by foreign-born artists like Antonio Verrio and Louis Laguerre. He trained in London, possibly under Thomas Highmore, and studied the great European tradition of ceiling and wall painting.

Thornhill's greatest achievement is the painted interior of the dome of St Paul's Cathedral, London (1715–1719), depicting scenes from the life of St Paul in grisaille — a vast and technically demanding commission that established his supremacy among English decorative painters. He also painted the magnificent Painted Hall at the Royal Naval College, Greenwich (1707–1726), a sprawling allegorical program glorifying William and Mary, Queen Anne, and the Protestant succession that is the finest Baroque painted interior in Britain.

Thornhill was knighted by George I in 1720, the first English-born painter to receive this honor, and served as Serjeant Painter to the Crown. He was elected a Fellow of the Royal Society and served as a Member of Parliament for Weymouth. He was the father-in-law of William Hogarth, who married his daughter Jane. Thornhill founded an art academy in his house in Covent Garden, where Hogarth was among the students. He died on 4 May 1734 at his family estate in Dorset.

Thornhill worked in the grand decorative tradition of continental Baroque ceiling and wall painting, producing illusionistic compositions in the manner of Laguerre and Verrio, whom he succeeded as the dominant practitioner of the form in Britain. His large-scale programmes deploy allegorical figures, historical narratives, and trompe-l'oeil architectural elements in elaborately coordinated schemes designed to glorify the buildings they occupied. His figure style reflects Italian Baroque influence absorbed through prints and the work of his continental predecessors in England, rather than direct Italian study. He was an able draughtsman and a confident organiser of complex pictorial programmes.

Thornhill was the most important British practitioner of Baroque decorative painting and the only native-born painter to compete successfully with the continental artists who dominated that field in England. His greatest achievement was the painted ceiling of the Painted Hall at the Royal Hospital Greenwich, one of the most ambitious decorative painting programmes ever undertaken in Britain. He was the father-in-law of William Hogarth and served as a Member of Parliament. He was knighted in 1720.