Iacobus

From Ancient Greek Ἰάκωβος (Iákōbos), from Biblical Hebrew יַעֲקֹב (yaʿăqōḇ, literally “May He Heel”), from the third-person singular masculine imperfective form of the Semitic verb "to heel" (with various meanings), in turn from עָקֵב (ʿāqēḇ, “heel of the foot”).