Psalms 14:1-3

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

Psalms 53:1-3

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

Mahalath : daughter of Ishmael; wife of her cousin Esau,grand-daughter of David; wife of Rehoboam,a musical term (perhaps 'a sad tone' NASB marg.)

Maskil : a literary or musical term