The 1905 census gives Ed's HoChunk (Winnebago) name as Che Win Che Ka Ra Hay Kah, which is for the Thunderbird Clan name Čiwįjikerehiga, "He Who Makes a Rumbling Noise," a reference to distant thunder.
“The sons of Wanknaroskaka or James Blackhawk were Nojumbka, meaning The thunder who strikes the tree or John Blackhawk and Wakjagohoyka, (Returning with victory), Albert Blackhawk, died July 1912, at age 20. The daughters are Chimkananewinka (She who goes on the village) born 1875 married Edwin Greengrass; Ahosojwaywinka (She whose feathers are worn) born 1881, married Arthur Cas_man, and Wakanjapinwinka (The good thunder woman), born 1886, married Charles Greengrass and lives at Trempealeau, Wisconsin.” (Jipson, 241)
The November 1905 census gives the following line:
413. Che Win Che Ka Ra Hay Kah, Ed Greengrass, male, son and head of household, age 35.
His age implies that he was born in 1870.
The 1920 Indian census gives the following information on his children:
Norton William Jipson, Story of the Winnebagoes (Chicago: The Chicago Historical Society, 1923). This is an unpublished typescript.
Indian Census Rolls, 1885-1940; (National Archives Microfilm Publication M595, 692 rolls); Records of the Bureau of Indian Affairs, Record Group 75; National Archives, Washington, D.C. November 1905; Roll: M595_671; Line: 2.
Indian Census Rolls, 1885-1940; (National Archives Microfilm Publication M595, 692 rolls); Records of the Bureau of Indian Affairs, Record Group 75; National Archives, Washington, D.C. 1920; Roll: M595_168; Page: 25; Line: 14; Agency: Grand Rapids.