I'm sorry I can't help this far back. This pairing of names persisted into the ninteenth century. On December 31st, 1849, Robert Sayle Corlett of the Craige, Andreas, was born. He became an MHK and died on January 7th, 1924. On January 29th, 1906 he married Catherine Ann Teare (1871-1937), daughter of my great-great-aunt Marianne (Mrs. Teare, Ballaskilley, Bride, nee Joughin, Ballaquark, Bride). He was always known in the family as Sayle Corlett, and she as Katie the Craige. His father was Robert Corlett. Beyond him I have no information. Perhaps you do.