'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 burnt her and her father with fire.

And it came to pass on the fourth day, that they arose early in the morning, and he rose up to depart. And the damsel's father said to his son-in-law, Strengthen thy heart with a morsel of bread, and afterward ye shall go your way.