The sons of Saul were Jonathan, Ishvi, and Malki-Shua. ¹  He had two daughters; the older one was named Merab and the younger Michal.

When the time came for Merab, Saul’s daughter, to be given to David, she instead was given in marriage to Adriel, who was from Meholah.

¹ Then Saul said to David, “Here’s my oldest daughter, Merab. I want to give her to you in marriage. Only be a brave warrior ²  for me and fight the battles of the Lord.” For Saul thought, “There’s no need for me to raise my hand against him. Let it be the hand of the Philistines!”

So the king took Armoni and Mephibosheth, the two sons of Aiah’s daughter Rizpah whom she had born to Saul, and the five sons of Saul’s daughter Merab ¹  whom she had born to Adriel the son of Barzillai the Meholathite.