I am trying to info on the "Unknown Phillips" whose descendants are outlined below. He lived in Prince George's County, MD in the early 1800s, perhaps in the late 1700s as well. Supposedly the Phillips moved to Washington DC in 1824. Does anyone have any links or clues? Thanks!

Descendants of Unknown Phillips

1 Unknown Phillips b: Abt. 1780
. 2 George Washington Phillips b: December 10, 1811 Prince George's County, Maryland d: December 31, 1895 in Washington, DC
..... +Susan Veronica Kneller b: August 16, 1819 Washington, DC m: June 12, 1837 Washington, DC d: June 22, 1905 in Washington, DC
.... 3 Samuel Louis Phillips b: May 17, 1838 d: December 03, 1920 in Washington,D.C.
.... 3 Alice Susan Phillips b: September 16, 1841 Washington, DC d: January 23, 1845 in Washington, DC
.... 3 George Washington Phillips, Jr. b: October 30, 1842 d: August 03, 1843 in Washington, DC
.... 3 George Richard Phillips b: July 22, 1844 Washington, DC d: May 01, 1925 in Washington, DC
........ +Rosa Mills b: March 27, 1860 Philadelphia, Pennsylvania m: November 03, 1881 d: August 28, 1927 in Washington, DC
....... 4 Anita Veronica Phillips b: October 16, 1882 Washington, DC d: September 21, 1958 in Miami, Florida
........... +Gilbert Cole Smith, Jr. b: November 24, 1870 San Francisco, California m: June 15, 1903 Fort Myer, VA d: November 21, 1921 in Washington, DC
....... *2nd Husband of Anita Veronica Phillips:
........... +William Albert Jones b: August 13, 1878 Tennnessee m: June 19, 1929 d: June 17, 1953 in Miami, Fla.
....... 4 George Washington Phillips II b: June 11, 1891 d: December 01, 1956 in Washington, DC
........... +Alice Louise Farr b: May 22, 1893 Virginia m: Abt. 1913 Washington, DC d: March 26, 1955
. 2 Samuel Phillips b: Abt. 1811 d: Bef. 1885
.... 3 Isabella "Belle" Phillips b: Abt. 1837 Maryland d: Aft. 1890
........ +Presley W. Bartholow b: Abt. 1830 Maryland m: February 14, 1856 d: Bef. 1890
....... 4 James Walter Bartholow b: 1858
....... 4 Sallie Catherine Bartholow b: July 1865 Washington, DC d: Aft. 1930
........... +None
....... 4 Mabel Rettie Bartholow b: November 1867
....... 4 Jeremiah P Bartholow b: March 1869
....... 4 Frances A "Fannie" Bartholow b: July 1872 Maryland d: Aft. 1930
........... +None
....... 4 Mary P Bartholow b: 1875
....... 4 Alice E. Bartholow b: April 1878
........... +None
.... 3 Alexander Phillips b: Abt. 1840
.... 3 George Phillips b: Abt. 1840
.... 3 Mary Phillips b: Abt. 1840