 He then became a tutor in the household of Sir Francis Knollys.On the accession of Mary he was restored to his fellowship, but a perusal of Calvin's ‘Institutes’ began to unsettle his religious opinions, and his orthodoxy was further shaken by reading Peter Martyr's ‘Commentary on the First Epistle to the Corinthians’ and by witnessing the execution of Ridley and Latimer, which he strongly denounced.He now became as vehement a Protestant as he had before been Roman Catholic, absented himself from mass, and made a point of walking out whenever obnoxious ceremonies occurred in the church service.