R. Jacob Castro, rabbinical authority; lived in Egypt; died there in 1610. He was a nephew, not a son, of the master of the mint, Abraham de Castro. On a pilgrimage to Safed he was the guest of R. Joseph Caro, by whom he was highly esteemed. De Castro corresponded among other of his contemporaries with R. Samuel de Medina, and was the author of several works, which were published after his death.

הסכמה: ר' חיים דוד חזן, ירושלים, תרכ"ה.