'Son in law' in the Bible

Then the Philistines said, "Who has done this?" And they said, "Samson, the son-in-law of the Timnite, because he has taken his wife and given her to his companion." And the Philistines came up, and burned her and her father with fire.

And on the fourth day they arose early in the morning, and he prepared to go; but the girl's father said to his son-in-law, "Strengthen your heart with a morsel of bread, and after that you may go."