What does Jacob mean?
Jacob comes from the Hebrew Yaakov, linked to “heel” and read as “supplanter.” The patriarch Jacob’s twelve sons founded the tribes of Israel; the same name gives us James.
What does Jonathan mean?
From Hebrew Yehonatan, combining yeho (a form of Yahweh) + natan 'to give' — 'Yahweh has given'. A 'gift of God' name framed as God's act of giving.