Michal. Some codices, cited in the Massorah, with Septuagint and Syriac, read "Merab", as in 1 Samuel 18:19.
Related Commentaries of 2 Samuel 21:8
2 Samuel 21:8
8 But the king took the two sons of Rizpah the daughter of Aiah, whom she bare unto Saul, Armoni and Mephibosheth; and the five sons of Michalc the daughter of Saul, whom she brought up for Adriel the son of Barzillai the Meholathite: