Browning, Charles H. Americans of royal descent, 7th ed., Baltimore : Genealogical Pub. Co., 1986, pg. 389 apparently is missing a generation as shown in the referenced other pages from Browning (p. 28, 67 & p. 99) and The Concise dictionary of national biography, Pt. 1 : from the beginnings til 1900, London : Oxford U. Press, 1969, pg. 1368.