Christian feast day: Robert Grosseteste (Church of England)

Robert Grosseteste, also known as Robert Greathead or Robert of Lincoln, was an English statesman, scholastic philosopher, theologian, scientist and Bishop of Lincoln. He was born of humble parents in Suffolk, but the association with the village of Stradbroke is a post-medieval tradition. Upon his death, he was revered as a saint in England, but attempts to procure a formal canonisation failed. A. C. Crombie called him "the real founder of the tradition of scientific thought in medieval Oxford, and in some ways, of the modern English intellectual tradition". As a theologian, however, he contributed to increasing hostility to Jews and Judaism, and spread the accusation that Jews had purposefully suppressed prophetic knowledge of the coming of Christ, through his translation of the Testaments of the Twelve Patriarchs.

The Church of England commemorates many of the same saints as those in the General Roman Calendar, mostly on the same days, but also commemorates various notable Christians who have not been canonised by Rome, with a particular though not exclusive emphasis on those of English origin. There are differences in the calendars of other churches of the Anglican Communion.