'Father in law' in the Bible

And his daughter-in-law, Phinehas' wife, was with child and nigh the birth. And when she heard the tidings of the taking of the ark of God, and that her father-in-law and her husband were dead, she bowed herself and travailed, for her pains came upon her.

And she named the child Ichabod saying, "Honour is departed from Israel" - Because the ark of God was taken, and her father-in-law and her husband were dead.