Diego Pereira d'Aguilar

Baron Diego Lopes Pereira d'Aguilar (born 1699 Portugal; died 10 August 1759, London) was a Portuguese-born London-based Jewish businessman, community leader and philanthropist, originally a Portuguese converso, who lived in the 18th century.

When in 1747 he asked the government to return to him a part of the money that he had deposited on account of the revenues, the empress Maria Theresa replied: "This appears to me just.

D'Aguilar was a great favorite with the empress, who commissioned him to rebuild and enlarge the imperial palace at Schönbrunn, and he advanced 300,000 florins for the work.

D'Aguilar, who together with his family enjoyed the greatest freedom of belief, was the founder of the Spanish or Turco-Jewish community in Vienna, and succeeded in obtaining many concessions for the relief of his oppressed fellow worshippers.

The crest is a demi-lion proper, wearing a castellation Azure on its head and holding a sprig of leaves Vert in its right paw.