He would be a (many 'Greats' Uncle) to me. I believe that my Dinwiddie family lineage, may have originated with Robert's brother, Lawrence?
My Western line begins with David Dinwiddie, (1816-1871),s/o THOMAS DINWIDDIE, (b.27 March, 1787, Adams, Penn; d. 17, Sept. 1862, Eagle Creek, Lake, Indiana and his wife: Mary Ann Wilson; b. 19, July 1788, Adams, Penn.; d. 10, Sept. 1856, Hebron, Porter, Ind.). David and family left from Hebron, Indiana on 18, March 1853 with his wife, Elsie (Hildreth) Dinwiddie, (1827-1859) and their children: James T. Dinwiddie (age 8); Martha J (age 6); Harriet A. (age 3); JOSEPH M. (age 2; my G Grandfather); a cousin, David; Hugh Dinwiddie (b. 1812); and David's brother, Thomas Dinwiddie, (1828-1910). They traveled the Oregon Trail and settled; first in Walla Walla, Wa. [In the year 1853 Washington Territory was separated from Oregon Territory. (Oregon became a state in 1859)]. They then moved to Jordon Valley, Oregon. Joseph married LAURA KING of Walla Walla, Wa. They owned a large ranch out of Jordon Valley, Or.
PARENTS of THOMAS DINWIDDIE: DAVID McCLURE DINWIDDIE; b. 25 July, 1755, Marsh Creek, Adams, Penn.; d. 5, Dec. 1823; Youngstown, Mahoning, Ohio.
Married 1. Mary? 2. Susannah (Patterson).
s/o DAVID DINWIDDIE & JEAN (JANE) McCLURE (1726-1781)
My maternal G Grandparents were JOSEPH MILAN DINWIDDIE & LAURA (KING) DINWIDDIE.
CH: William Rufus Dinwiddie, Elsie Lenore Dinwiddie (my G Mother), who married CHARLES ALBERT BROWN (my G Father); s/o ALBERT BROWN & ADELINE TUCKER;
WIFE OF CHARLES: ELSIE LENORE DINWIDDIE BROWN.
CH: DONALD (killed in USAF, Korea); BONNIE; GRACE (BROWN) HARRIS (my Mother), who married HARVEY MILTON HARRIS in Jordon, Valley, Oregon
CH: JAMES (d. age 8); JANE ADAIR (HARRIS) RICHARDS, b. 1937; SUE ELLEN (d. 2001)
Jane Harris Richards