In the 1930 US Census for District 183, Saint Paul, Ramsey, Minnesota the family of Alymer Edward Barnum was enumerated as follows:
Dwelling #373; Family #383 (1290 Schaefer Street)
Barnum, Alymer; Head; Owns non-farm home valued at $700; Owns radio set; Male; White; 32; Married; Married at 21; Able to read and write; b. Canada-English; Father b. Canada-French [sic]; Mother b. Canada-English; English spoken at home before coming to US; Immigrated to US in 1919; Naturalized citizen; Able to speak English; Auto driver; Wholesale fuel; At work yesterday; Veteran of World War I
Barnum, Grace; Wife; Female; White; 31; Married; Married at 20; Able to read and write; b. Minnesota; Both parents b. Germany; Able to speak English; No trade or profession
Barnum, Alymer Jr; Son; Male; White; 9; Single; Attended school during the census year; Able to read and write; b. Minnesota; Father b. Canada-English; Mother b. Minnesota; No trade or profession
Barnum, Robert E.; Son; Male; White; 6; Single; Attended school during the census year; Able to read and write; b. Minnesota; Father b. Canada-English; Mother b. Minnesota; No trade or profession
His headstone application states that he served in the 3rd Construction Bricklaying Company, Canadian Air Service, during WWI.
Ontario, Canada Births, 1869-1911. Name: Aylmer Barnum; Date of Birth: 24 Dec 1898; Gender: Male; Birth County: Hastings; Mother's name: Lydia Mae Barnum; Archives of Ontario Microfilm: MS933_25. This was a delayed birth registration, made on 30 Jan 1942. The deponent states as follows: I, Alice Maud Gano of the Village of Marmora in the County of Hastings in the Province of Ontario do solemnly declare that: (1). I am the aunt and foster mother of the aforesaid; (2). That I have personal knowledge of the matters herein and above set forth, and the information furnished is true in substance and in fact; (3). That the parents of the said person are dead. That I am the aunt of the said person and was on intimate terms with his family at the time of his birth; that, although I was not present at his birth, I saw the child when he was but a few days old and was informed at the time and fully believe that he was born at the place and on the date stated. //Mrs. Alice M. Gano//
Minnesota Death Index, 1908-2002. Name: Alymer E. Barnum; Birth Date: 1 Jan 1900; Death Date: 3 Mar 1962; Death County: Hennepin; State File Number: 005955; Certificate Number: 005955; Certificate Year: 1962; Record Number: 1494161.