Educated at Eton, he travelled abroad for some time and in 1636 became secretary to the lord high treasurer, William Juxon; later he was a member of the Long Parliament, being one of those who voted against the attainder of Strafford and who followed Charles I to Oxford. He fought at Edgehill and was one of the king's secretaries during the negotiations with the parliament at Hampton Court, and also during those at Newport, Charles speaking very highly of his services just before his execution.
Remaining in England, Warwick was passively loyal to Charles II during the English Commonwealth period and enjoyed the confidence of the royalist leaders. In 1660 the king made him a knight, and in 1661 he became a Member of Parliament and secretary to another lord treasurer, Thomas Wriothesley, earl of Southampton, retaining this post until the treasury was put into commission on Southampton's death in May 1667.
Warwick's only son, the younger Philip Warwick (d. 1683), served as envoy to Sweden in 1680.
Warwick is chiefly known for his Memoirs of the reigne of King Charles I, with a continuation to the happy restauration of King Charles II, written between 1675 and 1677 and published in London in 1701.
This entry was originally from the 1911 Encyclopedia Britannica.