He was headmaster of Charterhouse from 1614 until 1624, and afterwards of Eton College, from which he was ousted during the English Civil War.
He was a king's scholar at Westminster School, and proceeded in 1606 to Christ Church, Oxford.
He obtained eventually the headmastership of Tonbridge School, Kent, and published for the use of his scholars Parabolæ Evangelicæ Latino redditæ carmine paraphrastico varii generis (8vo, London, no date).
On the return of Charles II he was restored to his rectory and fellowship (12 July 1660), but died very poor, and was buried in the chapel at Eton on 5 October 1660.
[2] Grey wrote some additions to John Rider's Dictionary, and added testimonies from scripture to Grotius's Baptizatorum Puerorum Institutio, 8vo, London, 1655; earlier editions had appeared in 1647 and 1650.