Joan d'Acosta (Russian: Ян Лакоста, romanized: Yan Lakosta; c. 1665 – c. 1740) was a Jewishjester at the court of Tsar Peter I of Russia in the first half of the eighteenth century.
D'Acosta is described as having been very clever and witty, well-versed in Scripture, and a master of numerous European languages. Tsar Peter reportedly enjoyed discussing philosophical and theological questions with him, which often led to heated arguments.[3] As a reward for his services, the tsar gave him the uninhabited island of Sammer in the Gulf of Finland,[4][3] along with the mock title "King of the Samoyeds".[5] He retained his position as court jester under Empress Anne.
Legacy
D'Acosta appears as a protagonist in David Markish's 1983 novel Jesters.[6]