'Father in law' in the Bible

And his daughter-in-law, Phinehas' wife, was with child, near to be delivered; and when she heard the tidings that the ark of God was taken, 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, The glory is departed from Israel; because the ark of God was taken, and because of her father-in-law and her husband.