Gérard DeVisme

Gérard DeVisme (1726–1797), also styled de Visme, was a British merchant, banker, and landowner active in Lisbon in the eighteenth century.^[1] He played a major role in Anglo-Portuguese trade and finance, in link with the transatalantic triangular trade.^[2] He was also known for developing the estate of Monserrate in Sintra.

Gérard de Visme was born in London on 6 February 1726. He was the fifth son of Philippe de Visme, a Huguenot nobleman from Picardy, and Marianne de la Mejanelle. The family had fled France after the revocation of the Edict of Nantes. He was baptised at the French Huguenot church of St Martin Orgars in London. His godfather was Gerard Vanneck, a wealthy merchant, who later supported his career. De Visme was educated at Westminster School between 1737 and 1741.

He was likely an apprentice in the London trading house of Gerard Vanneck, his godfather.^[3]

De Visme was an active member of the British Factory in Lisbon.^[4] He regularly signed official petitions and correspondence defending British commercial interests. He was also owner of the company Purry, Mellish and Devisme, along with David de Purry and Joseph Mellish.

Gérard de Visme was a key figure in eighteenth-century Anglo-Portuguese commerce. His business activities linked London, Lisbon, Brazil, and global trade networks.