Thomas More admitted Clement as one of his household to help in the education of his children and to assist him in linguistic studies.
In 1521, Clement was at Corpus Christi College, Oxford, when Cardinal Wolsey constituted him the Rhetoric Reader in the university; later he became professor of Greek there.
About 1526 he married the daughter of a Norfolk gentleman, Margaret Giggs, who lived and studied with More's family; she had been adopted by More.
[1][2] Applying himself to the study of medicine, he was admitted a Fellow of the College of Physicians (1 February 1528), and was chosen by Henry VIII to attend Wolsey when the latter was dangerously ill at Esher (1529).
He returned to England in Mary Tudor's reign and practised his profession in Essex, but fled abroad again when Elizabeth I came to the throne.