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´)

Psalms 57:1

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

Miktam : a literary or musical term (NIV margin)

Saul : the sixth king of Edom,son of Simeon and a Canaanite woman,son of Uzziah of Kohath son of Levi