Martin Clifford died on 10 December 1677. We know little of his early life, except that he was educated at Westminster School, entered Trinity College, Cambridge in 1640, and took his BA in 1643. He disappears from our view during the civil war and Commonwealth, but reappears after the Restoration as one of the libertines and wits who gathered around the court of Charles II. We know that he gained a small reputation as a poet and critic, and tried to draw Dryden into open controversy, but without success. In 1671, with the support of powerful friends, he became Master of the Charterhouse.
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.