Otis was born about 1920. He was the son of Erwin Davis and Florie Austin. He was a fourth cousin of Loretta Lynn and Crystal Gayle.
"Kentucky, Vital Record Indexes, 1911-1999," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QKHV-1WMW : 11 February 2018), Irvin O Davis, 18 Jan 1920; citing Birth, Johnson, Kentucky, United States, Kentucky Department for Libraries and Archives, Frankfort.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XMFL-DYH : accessed 6 September 2019), Otis Davis in household of Ervin Davis, McVeigh, Pike, Kentucky, United States; citing enumeration district (ED) ED 20, sheet 11A, line 42, family 216, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 775; FHL microfilm 2,340,510.