What was Naomi’s lineage?

Answer:

"The name of the man was Elimelech, the name of his wife was Naomi, and the names of his two sons were Mahlon and Chilion-Ephrathites of Bethlehem, Judah. And they went to the country of Moab and remained there" (Ruth 1:2).

Ephrath is the old name for Bethlehem (Genesis 35:19; 48:7; Micah 5:2). So other than being natives of Bethlehem and thus of the tribe of Judah, we know nothing about Naomi's family.