Shobi was probably the brother of Hanun, who had humiliated David’s messengers after the death of Nahash (2 Samuel 10; see study note on 2 Samuel 10:1–5).
Makir was Mephibosheth’s host before David summoned him (2 Samuel 9:4–5).
Barzillai of Gilead was probably not the same as Barzillai from Meholah (2 Samuel 21:8).