Percy was born on 23 May 1916 in Byron, Wisconsin. (Draft Card, 1930 census)
His Hocąk name was Rohacōžumąnįga, "He Walks Leading Many", from roha, "many"; cōžú, "to lead, to be in the company of someone, to accompany"; mąnį, "to walk"; and -ga, a definite article suffix used in personal names.
He was 5' 8" tall, 177 lbs., with black hair, brown eyes, and a dark complexion. (Draft Card)
1940 — he was living in Wyeville, Monroe County, Wisconsin. (Draft Card)
He passed away in Mauston, Wisconsin on 7 December 1965. (Wisc. State Jour.)
1930 Indian census; Roll: M595_571; Page: 35; Line: 1; Agency: Tomah Indian School. 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.