'Families' in the Bible

And Saul answereth and saith, 'Am not I a Benjamite -- of the smallest of the tribes of Israel? and my family the least of all the families of the tribe of Benjamin? and why hast thou spoken unto me according to this word?'

and he bringeth near the tribe of Benjamin by its families, and the family of Matri is captured, and Saul son of Kish is captured, and they seek him, and he hath not been found.