Howard Griffith Sellman was born on 21 Feb 1823 in Frederick Co., Maryland as the seventh child of William M Sellman and Ruth Shipley. He had seven siblings, namely: Gassaway, Captain William Oliver, Warnetta, Mary, Robert, John Jeremiah Moore, and Francis M. He died on 17 May 1884 in prob Merrick Co., Nebraska. When he was 32, He married Nancy "Nannie" Shindler Hebb,daughter of Hilliard Forest Hebb and Elizabeth Jane Shindler, on 20 Mar 1855 in Sharpsburg, Montgomery Co., Maryland.

Howard Griffith Sellman was buried in Central City Cemetery, Central City, Merrick Co., Nebraska, Row C-8, Lot C44, Space 2. He lived in Clarksburg, Montgomery, Maryland in 1850. He lived in Sharpsburg, Washington, Maryland, United States in 1860. Military Srv: Bet. 1862–1865 in Private, White's Battalion, Calvary (VA) He lived in Cracklin, Montgomery, Maryland, United States in 1880. He lived in Merrick, Nebraska, United States in Jun 1890. He was employed by Farmer in 1900 in Merrick Co., Nebraska. He lived in 1925.

Howard Griffith Sellman and Nancy "Nannie" Shindler Hebb had the following children:

Nannie Forest Sellman was born on 12 Feb 1856 in Washington Co, Maryland. She died on 24 May 1923 in Washington Co., Maryland (Buried Mountain View Cemetery, Sharpsburg, Washington, Maryland, USA). She married Edward C Biggs on 22 Nov 1881 in prob Washington Co., Maryland.
Charles Jones Sellman was born on 14 May 1858 in Sharpsburg, Washington, Maryland, United States. He died on 19 Sep 1912 in Mullin, Mills, Texas, United States. He married Nancy (Nannie) Elizabeth Roberts on 12 Dec 1888 in Brady, McCulloch Co., Texas.
William Hilliard Sellman was born on 07 Feb 1860 in Sharpsburg, Washington, Maryland, United States. He died on 02 Mar 1936 in Des Moines, Boone, Iowa, United States. He married Henrietta Marguerietta Biggs on 09 Feb 1887 in Nance Co., Nebraska.
Dixie Elizabeth Warnetta Sellman was born on 17 Jun 1861 in Washington Co., Maryland. She died on 01 Mar 1942 in Walla Walla, Walla Walla, Washington. She married William Riley Watson on 24 Jun 1890 in Merrick Co., Nebraska.
Mary Julia Sellman was born on 27 Feb 1863 in Maryland. She died on 03 Nov 1931 in Washington City, District Of Columbia, District of Columbia, USA.
Elizabeth Patricia Sellman was born on 11 Oct 1866 in Frederick Co., Maryland. She died on 23 Jul 1938 in Oelwein, Fayette Co., Iowa. She married Thomas L Hanson on 11 Nov 1890 in Central City, Merrick Co., Nebraska.
Ruth Brewer Sellman was born on 20 Sep 1868 in Maryland. She died on 23 Apr 1892 in Merrick Co., Nebraska. She married Robert Edward Barge on 23 Apr 1890 in Central City, Merrick Co., Nebraska (Barge, Robbert E. Sellman, Ruth B. p401 #845 23 Apr 1890).
Howard Griffith Sellman Jr. was born on 20 Dec 1871 in Maryland. He died on 21 Jan 1936 in Portland, Multnomah Co., Oregon. He married Mary Maud Sinsel on 02 Nov 1898 in Archer, Merrick Co., Nebraska.