found: Her A royal quest, c1987:t.p. (Mary Lide)
found: Her Pearls before swine, 1996:CIP t.p. (Mary Clayton) fact sheet (born and raised in Cornwall; has lived in Denmark and Italy, and in Ann Arbor, Mich., where she taught history at the university; spends most of time in Cornwall; has published several historical novels under the names Mary Lide and Mary Lomer)
found: Contemp. authors, v. 132(Lide, Mary; (Mary Lomer); born in Cornwall, England; daughter of Edwin James Lomer and Grace Pringle Black; St. Hugh's College, Oxford, B.A., 1953; M.A., 1960; lists novels under name Mary Lide; under Mary Lomer, lists: The bait, 1961; Robert of Normandy, 1991)
found: Goodreads website, 17 May 2012:author profile page (Mary Clayton aka Mary Lide and Mary Lomer; born 1 Jan. 1932 in Cornwall)