King was the son of Richard King of
Ashby de la Launde and his wife Elizabeth Colly, daughter of
Anthony Colly of Glaston, Rutland and MP for
Rutland. He was a student of
Gray's Inn in 1623 but delayed being called to the bar for over 20 years. On the outbreak of the Civil War, he became a captain of foot in the Parliamentary army. He took part in the first attack on Newark, and was indicted for treason at the Lincolnshire assizes in 1643. In the same year, he became
Sheriff of Lincolnshire to 1644 and Governor of Boston to 1645. He was also a commissioner for levying money and a commissioner for defence, in the eastern association. In 1644 he was commissioner for assessment for Lincolnshire,
Deputy Lieutenant for Lincolnshire and colonel in the parliamentary army. He was freeman of Grimsby in 1645. He quarrelled with Lord Willoughby of Parham and Cromwell regarded him with suspicion. After his commissions were cancelled at the request of the county committee in 1645, he held no further county office until 1658. King was finally called to the bar in 1646 and replaced a Royalist as
Recorder of Grimsby which position he held until his death. Also in 1646 he stood unsuccessfully for parliament at
Grimsby. In 1647 he was accused of obstructing the collection of taxes. He became an ancient of Gray's Inn in 1650. In 1653 he succeeded to the estates of his father, including
Ashby Hall. He was commissioner for sewers for Lincolnshire in 1658. In 1659 he was considered to be one of the Lincolnshire Royalists. He was commissioner for militia in March 1660 and a
J.P. for Kesteven from March 1660 to 1663. == Political career ==