Ruth 1:2

1:2 (Now the man’s name was Elimelech, his wife was Naomi, and his two sons were Mahlon and Kilion. They were of the clan of Ephrath from Bethlehem in Judah.) They entered the region of Moab and settled there.

Ruth 1:5

1:5 Then Naomi’s two sons, Mahlon and Kilion, also died. So the woman was left all alone – bereaved of her two children as well as her husband!