(b Belém. nr. Lisbon, 10 Mar. 1768; d Rome, 7 Mar. 1836).
The leading Portuguese painter of his period, the only one with an international reputation. He studied in Rome 1788–95, and in 1802 he was appointed first court painter in Lisbon. In 1810 he was imprisoned for collaborating with the French invaders during the Peninsular War, but he successfully protested his innocence and after his release in 1811 he designed the celebrated silver table service (1813–16) presented by Portugal to the Duke of Wellington for his part in defeating the French (it is now in the Wellington Museum, London). He continued working in Lisbon until 1823, when he went into exile because of an illiberal new regime and he spent the rest of his life in Paris and (from 1826) Rome. Sequeira was a prolific and versatile painter, mainly of religious subjects and portraits. His early work was Neoclassical in style, but some of his later work is tinged with Romantic feeling and is sketchy in handling. Although a much lesser artist, he is a kind of Portuguese equivalent of Goya.