Source Information Yale Genealogy, History and Biographies [database on-line]. Provo, UT: Operations Inc, 2005.
Original data: Yale, Rodney Horace,. Yale genealogy and history of Wales, the British kings and princes, life of Owen Glyndwr : biographies of governor Elihu Yale for whom Yale University was named, Linus Yale, Sr., and Linus Yale, Jr., the inventors of yale locks, Maurice Fitz Gerald, the great leader in the conquest of Ireland, Roger de Montgomery, the greatest of the Norman Lords, and other noted persons. Beatrice, Neb.: unknown, 1908.