Our ministry is based on the Biblical story of King Saul's grandson, Mephibosheth, who was Jonathan's child...
3 The king said, “Is there not yet anyone of the house of Saul to whom I may show the kindness of God?” And Ziba said to the king, “There is still a son of Jonathan who is crippled in both feet.” ...
... 6 Mephibosheth, the son of Jonathan the son of Saul, came to David and fell on his face and prostrated himself. And David said, “Mephibosheth.” And he said, “Here is your servant!”
7 David said to him, “Do not fear, for I will surely show kindness to you for the sake of your father Jonathan, and will restore to you all the land of your grandfather Saul; and you shall eat at my table regularly.”.
NASB (2 Samuel 9:1-7).