Granville Roland Fortescue was born 12 October 1875 in Manhattan, New York County, New York, United States to Robert Barnhill Roosevelt (1829-1906) and Marion Theresa O'Shea (1848-1902) and died 21 April 1952 Palm Beach, Palm Beach County, Florida, United States of unspecified causes. He married Grace Hubbard Bell (1883-1979) 4 June 1910 in Washington, D.C., United States.
|Offspring of Granville Roland Fortescue and Grace Hubbard Bell (1883-1979)|
|Thalia Bell Fortescue (1911-1963)||14 February 1911 Washington, D.C., United States||3 July 1963 Palm Beach, Palm Beach County, Florida, United States||Thomas Hedges Massie (1905-1987) Thomas Hedges Massie (1905-1987) Robert Thomlinson Uptigrove (1932-1958)|
|Rion Fortescue (1912-1983)|
|Kenyon Helene Fortescue (1914-1990)||4 July 1914 Brussels-Capital Region, Belgium||27 March 1990 Manalapan, Palm Beach County, Florida, United States||Julian Louis Reynolds (1910-1983)|