'Son in law' in the Bible

Then the Philistines said, “Who did this?” And they were told, “Samson, the son-in-law of the Timnite, because he took Samson’s wife and gave her to his [chief] companion [at the wedding feast].” So the Philistines came up and burned her and her father with fire.

On the fourth day they got up early in the morning, and the Levite prepared to leave; but the girl’s father said to his son-in-law, “Strengthen yourself with a piece of bread, and afterward go your way.”