(b ?Mechelen; fl from 1677; d London, bur 26 Aug 1737). Flemish painter, active in England. He was the son of a sculptor, Valentin Lanscroon, who worked as a carver at Chatsworth House, Derbys, in 1695–6; he probably came to England with his father in 1677. Lanscroon is first mentioned at Windsor Castle in a warrant dated 16 November 1678 exempting the decorative painter Antonio Verrio and his Catholic assistants from religious molestation, and, according to Vertue, ‘he worked there under Verrio 6 or 7 years’. He probably later assisted Verrio in decorating the Queen’s Drawing Room at Hampton Court, London. Lanscroon was working independently from c. 1692, and a quantity of his decorative work has survived. This includes part of the once extensive scheme at Burley-on-the-Hill, Rutland (now Leics), the staircase ceiling and other work at Melbury House, Dorset, the signed staircase (1705) and other rooms at Powis Castle, Powys, the signed staircase (1712) at Drayton House, Northants, the hall ceiling at Farley Hill Place, Berks, and the signed staircase (1723) at Arnos Grove, London. All these are in a moderately accomplished variant of the overblown English Baroque style popularized by Verrio and Louis Laguerre. Lanscroon favoured rich, dark tones and made much use of red marbling in his subordinate decoration. His faces were sometimes individualized, and he also practised as a portrait painter. Sir William Turner (1689; ex-Bridewell Hospital) is personal in manner and is strongly characterized, but most of his productions are timid and conventional, such as Boy with Dog (1691; London, Sotheby’s, 12 May 1954, lot 83). His pupils included John Devoto.