Jacob

Son of Isaac; father of Israelites; has twin brother named Esau, with whom he fought while still in their mother Rebecca's womb; in Hebrew, Jacob means "holder of the heel" or "prince with God"; only person in Bible whom God said he "loved"; regarded as prophet in Islam; had 12 sons, who went on to found the 12 tribes of Israel.

Also, Jacobus, in Lower Latin, means James.