Psalms 51:1

Bathsheba : daughter of Shua the Canaanite; wife of Judah,daughter of Ammiel/Eliam; the wife David took from Uriah

David : a son of Jesse of Judah; king of Israel,son of Jesse of Judah; king of Israel

Nathan : a son of David; the father of Mattatha; an ancestor of Jesus.,son of David and Bathsheba,brother of Joel in David's army; a prophet,father of Igal, one of David's military elite; a man from Zobah,father of Azariah and Zabud, priestly officials of King Solomon,son of Attai of Judah,brother of Joel, one of David's military elite,one of the leaders Ezra sent to Iddo to ask for recruits,a layman of the Binnui Clan who put away his heathen wife

Psalms 56:1

David : a son of Jesse of Judah; king of Israel,son of Jesse of Judah; king of Israel

Gath : a town of the Anakim and Philistines in Judah 12 km south. of Ekron
(31° 41´, 34° 50´)

Miktam : a literary or musical term (NIV margin)

Philistines : a sea people coming from Crete in 1200BC to the coast of Canaan
(33° 33´, 35° 21´)