His draft card reveals that he had black hair, brown eyes, was tall and of a stout frame.
He had the Bear Clan name Ma-na-pa-he-no-kaw, for Mąną́pĕ-Hénąga, "Second Soldier Son" (his brother Frank being the first). (1898 census) This is from mąną́pĕ, "soldier, warrior, police"; and Hénąga, a birth order name for the second son.
That he and Frank are the sons of George Whitewood Seymour cannot be proven, but the circumstantial evidence is strong. The 1898 census shows that he is the son of White Wing.
In 1916 James is living alone, but in 1917 it is recorded that he married "Katie Whitespirit or Thunder." For a long time, she was counted in the censuses as his wife. She first appears in that capacity in the 1917 census, but does not herself appear as a resident of James' household in any census whatever. In all cases, she is said to be in the Wisconsin rolls, and was, in fact, living at the Tomah Indian School Agency in Wisconsin. During the whole period, she married several times. In the 1932 census, Katherine Logan (b. April 1901) shows up as his wife. However, in the 1940 Federal census, his wife is said to be Annie (b. 1875).
He had a farm near Wakefield, Thurston Co., Nebraska in 1918. (Registration card)
On Sept. 12, 1918, his residence was Wakefield, Thurston County, Nebraska. (Registration card)
He passed away after 1940, the last census in which he is found.