Ahinoam
Ahinoam (Hebrew: אחינועם) is a Hebrew name literally meaning brother of pleasantness, thus meaning pleasant.
There are two references in the Bible to people who bear that name:
A daughter of Ahimaaz, who became a wife of Saul and the mother of his four sons and two daughters, one of whom is Michal, David's first wife.
A woman from Jezreel, who became David's first wife, after he fled from Saul, leaving Michal, his first-ever wife, behind, and the mother of Amnon, David's first-born.
Some scholars suggest that the two may be, in fact, one person. In 2 Samuel 12:8, God tells David through the prophet Nathan, "I gave your master's house to you, and your master's wives into your arms." Jon Levenson suggests that this implies David took Ahinoam from Saul.
Levenson goes on to note that Ahinoam is always mentioned before
However, with Jonathan about the same age as, if not older than, David, Ahinoam, the wife of Saul, would be too old to give birth to David's first-born son, Amnon. Another objection is that the marriage of Ahinoam and David occurred during The Civil War between the House of David and the House of Saul.