2 Samuel 15:36

15:36 Furthermore, their two sons are there with them, Zadok’s son Ahimaaz and Abiathar’s son Jonathan. You must send them to me with any information you hear.”

2 Samuel 21:7

21:7 The king had mercy on Mephibosheth son of Jonathan, the son of Saul, in light of the Lord’s oath that had been taken between David and Jonathan son of Saul.