'Son in law' in the Bible

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

It happened on the fourth day, that they arose early in the morning, and he rose up to depart: and the young lady's father said to his son-in-law, "Strengthen your heart with a morsel of bread, and afterward you shall go your way."