There are two men by the name of Mephibosheth in the Bible, both in 2 Samuel.  The less prominent one was a son of King Saul; he was delivered by David to the  Gibeonites to be hanged in retaliation for Saul’s earlier slaughter of a band of  Gibeonites (2 Samuel  21:1-9).

The other Mephibosheth was the son of Jonathan, who was  the son of King Saul and a special friend of King David. When Mephibosheth was  five years old, his father Jonathan was killed in battle. Fearing that the  Philistines would seek to take the life of the young boy, a nurse fled with him  to Gibeah, the royal residence, but in her haste she dropped him and both of his  feet were crippled (2 Samuel  4:4). He was carried to the land of Gilead, where he found refuge in the  house of Machir, son of Ammiel, at Lo-debar.

Some years later, when King  David had conquered all of Israel’s enemies, he remembered the family of his  friend Jonathan (2 Samuel  9:1), and, wishing to display his loving loyalty to Jonathan by ministering  to his family, David found out that Mephibosheth was residing in the house of  Machir. So he sent royal messengers there, and brought Mephibosheth and his  infant son Micah to Jerusalem, where they resided from that point on (2 Samuel  9).

Later, when David invited the young boy to be part of his court, he  entrusted the family property to a steward, Ziba. During Absalom’s rebellion,  Ziba tried unsuccessfully to turn David against Mephibosheth. Upon the king’s  return to Jerusalem, Mephibosheth vindicated himself and was allowed to remain  in the king’s house (2 Samuel  16:19).