2 Samuel 4:2-4

And Saul's son had two men, captains of bands, one named Baanah and the other Rechab, sons of Rimmon the Beerothite, of the tribe of Benjamin; (for Beeroth was at one time taken to be part of Benjamin: But the people of Beeroth had gone in flight to Gittaim, where they have been living to this day.) Now Jonathan, Saul's son, had a son whose feet were damaged. He was five years old when news of the death of Saul and Jonathan came from Jezreel, and the woman who took care of him took him up and went in flight: and while she was getting him away as quickly as she was able, he had a fall and his feet were damaged. His name was Mephibosheth.