'Son in law' in the Bible

For many in Judah had sworn allegiance to him, because he was the son-in-law of Shecaniah son of Arah. His son Jonathan had married the daughter of Meshullam son of Berechiah.

Now one of the sons of Joiada son of Eliashib the high priest was a son-in-law of Sanballat the Horonite. So I banished him from my sight.