Samuel
2 Samuel 21:8BSB·traditional attribution

But the king took Armoni and Mephibosheth, the two sons whom Rizpah daughter of Aiah had borne to Saul, as well as the five sons whom Merab daughter of Saul had borne to Adriel son of Barzillai the Meholathite.

Matthew Henry Presbyterian @wholebiblehenry

Here I. Were are told of the injury which Saul had, long before this, done to the Gibeonites, which we had no account of in the history of his reign, nor should we have heard of it here but that it came now to be reckoned for.

Commenting on 2 Samuel 21:1-9

John Gill Reformed Baptist @doctorgill

But the king took the two sons of Rizpah the daughter of Aiah,.... Saul's concubine, Sa2 3:7, whom she bare unto Saul, Armoni and Mephibosheth; of whom we read nowhere else; after the name of the latter, it is probable, Jonathan's son was called, before mentioned: and the five sons of Michal the daughter of Saul, whom she brought up for Adriel the son of...

Jamieson-Fausset-Brown Reformed @jfbcommentary

the five sons of Michal the daughter of Saul, whom she brought up for Adriel--Merab, Michal's sister, was the wife of Adriel; but Michal adopted and brought up the boys under her care.