2 Samuel 9:1 - Wesley's Explanatory Notes

Of Saul — He saith not of the house of Jonathan, for he knew not of any son he had left, and therefore thought his kindness and obligation was to pass to the next of his kindred. As for Mephibosheth, he was very young and obscure, and possibly concealed by his friends, lest David should cut him off, as hath been usual among princes.