He was the 5th son of
Sir Francis Knollys and the brother of
Edward,
Francis,
Robert,
William and
Henry Knollys, who were all MPs. He entered the
Middle Temple in 1571. He was a
Member (MP) of the
Parliament of England for
Wallingford in 1584 and 1586, and for
Northampton in 1589. He married Joan, the daughter of John Heigham of Gifford, Suffolk and had 3 sons and 2 daughters. His second son,
Robert, was also an MP. ==Ancestry==