Blessed Thomas Thwing (1635-1680) was an English Catholic priest and martyr. Born at Heworth Hall, near York, in 1635, he was the son of George Thwing, Esquire, of Kilton Castle, Brotton, and Heworth Hall, and was the nephew of the Catholic martyr Edward Thwing. His mother was Anne, sister of the Sir Thomas Gascoigne, of Barnbow Hall, Barwick in Elmet, Yorkshire. Thomas Thwing was educated at St Omer and at the English College, Douai, ordained a priest and sent from there to minister on the English mission in 1665, which he did for some 14 years. Until April 1668, he was chaplain at Carlton Hall, Carlton-juxta-Snaith, the seat of his cousins the Stapletons. He next opened a school at Quo-usque, the Stapletons' dower-house. When in 1677 Mary Ward's "Institute of the Blessed Virgin Mary" beg