Rule, Gilbert, a Nonconformist divine, was subprincipal of King's College, Aberdeen, in 1651. He afterwards became curate of Alnwick, Northumberland, from which he was ejected in 1662. After the Revolution he was appointed principal of the University of Edinburgh. He died about 1703. He published, the Rational Defense of Nonconformity (1689, 4to): — Vindication of the Church of Scotland (1691, 4to): — The Cyprianick Bishop, etc. (1696, 4to): — Good Old Way (1697, 4to): — Presbyterian Government, etc. See Allibone, Dict. of Brit. and Amer. Authors, s.v.; Darling, Cyclop. Bibliog. s.v.