Mossom, Robert a learned Irish prelate, who flourished in the second half of the 17th century, was born about the opening of that aera; entered holy orders, and, being a stanch royalist, suffered much in the civil wars; but on the Restoration was made dean of Christ-church, Dublin, with which he held the bishopric of Londonderry, where he died in 1679. His works are, The Preacher's Tripartite (Lond. 1637, 1657,1685, fol.): — Variae colloquendi Formulae: — Narrative of George Wild, Bishop of Derry (Lond. 1665, 4to): — Zion's Prospect in its First View. He also published some of his sermons, of which Bickersteth (Christian Student) says that they are "spiritual and evangelical." See Harris's Ware's Ireland.