George was the son of Thomas McGuire and Melvina McKie.
"Michigan Marriages, 1868-1925," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:N3BF-DK7 : 9 March 2018), Geo. H. Mcguire and Beatrice Mckie, 14 May 1920; citing Lansing, Ingham, Michigan, v 3 p 238 rn 1592, Department of Vital Records, Lansing; FHL microfilm 2,342,737.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K4LD-6Y7 : accessed 10 April 2018), George Mcguire, Ward 3, Lansing, Lansing City, Ingham, Michigan, United States; citing enumeration district (ED) 33-28, sheet 18B, line 58, family 390, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 1760.