William Thompson Kirkpatrick (10 January 1848 - 22 March 1921) was an Irish teacher and grammar school headmaster. He is best known for having been the tutor of the two Lewis brothers from Belfast, Warnie Lewis and C. S. Lewis. C. S. Lewis, who would later become well known as a literary critic, novelist, and Christian apologist, lived as a resident pupil with Kirkpatrick from 1914-1917. In his autobiography, Lewis reports that he was significantly influenced by his tutor. Source: Wikipedia (en)