Listed as age 14 in the 1850 census with his parents.
Listed with his father in 1860 as a laborer (24, NY).
In 1862 he enlisted as a Prvate in Company D of the 9th New York Cavalry, as married at the time. He served 19 Aug 1862 thru 14 Mar 1864. It lists his parents and place of birth.
Listed in the 1865 census with his father, Darius (62, Herkimer Co) twice married, and himself (29, Chautauqua Co) widowed, and his son William H. Tallman (3 1/2, Chautauqua Co).
Then married Irene A. Watrous (1850–1930) on 22 Sep 1869 in Ashtabula Co, OH.
Children:
Mary E. Tallman 1872
Gertrude A. Tallman 1873
Grace A. Tallman 1876
Harrison W. Tallman 1888