'Father in law' in the Bible

And his daughter-in-law, wife of Phinehas, is pregnant, about to bear, and she heareth the report of the taking of the ark of God, that her father-in-law and her husband have died, and she boweth, and beareth, for her pains have turned upon her.

and she calleth the youth I-Chabod, saying, 'Honour hath removed from Israel,' because of the taking of the ark of God, and because of her father-in-law and her husband.