Two Derouin Brothers

Two Derouin brothers, sons of Joseph Derouin and Mathilde Dubeau, and siblings of my grandmother Delia Lucie (Derouin) McGlade:

  • Edgar Derouin, apparently born 26 February 1893 (but this birth date is from the census; I have not yet found a baptismal record). He was born at Otter Lake, Pontiac Co., Québec; and may have moved to Arnprior with his parents and other siblings in the early 1920s. In 1943, he was apparently living in Noranda (now Rouyn-Noranda) in northwestern Québec. There is some confusion as to his first name: in the 1901 census he is listed as Eddoré; in the 1911 census as Hector. An Ottawa Citizen newspaper item from 1943 identifies him as Edgar.
  • Pierre Albert Derouin, born at Otter Lake on 28 September 1897; baptized 18 October 1897 (Ste. Elisabeth, Vinton, Litchfield township, Pontiac Co.). Presumably moved to Arnprior with his family in the early 1920s. In 1943, as per the above-mentioned newspaper item, he was apparently living in Timmins, Ontario. Also known as Peter Derouin.
I’m looking for any information (marriage; family; death; burial; etc.) about the above two Derouin brothers.