I hope these help!
I found them in the 1940 US census: * '''1940 Census''': "1940 United States Federal Census", Year: 1940; Census Place: Erlanger, Davidson, North Carolina; Roll: m-t0627-02898; Page: 6A; Enumeration District: 29-22B, {{Ancestry Sharing|5115733|7b22746f6b656e223a226446354f75746b7446304c733153744a6a62394a50716b5564436d69664b792f57766e59534154716463633d222c22746f6b656e5f76657273696f6e223a225632227d}} - {{Ancestry Record|2442|152357024|ca}} (accessed 21 July 2023), Eunice Mae Allen (6), single daughter, in household of Jaly Allen (26) in Erlanger, Davidson, North Carolina. Born in North Carolina.
* '''Military''': "U.S., World War II Draft Cards Young Men, 1940-1947", The National Archives at Atlanta; Atlanta, GA; Wwii Draft Registration Cards For North Carolina, 10/16/1940-03/31/1947; Record Group: Records of the Selective Service System, 147; Box: 4, {{Ancestry Sharing|5115779|7b22746f6b656e223a2257306358356a2b787050414767774978566b50465a643239506752336845334635374932504867635276673d222c22746f6b656e5f76657273696f6e223a225632227d}} - {{Ancestry Record|2238|1090483|ca}} (accessed 21 July 2023), Household Members (Name) Age Relationship: Jolly Joe Allen 27 Self (Head), Dora Elizabeth Allen Wife; Gender: Male; Relationship to Draftee: Self (Head); Residence Place: Erlanger, Davidson, North Carolina, USA; Age: 27; Birth Date: 9 Jun 1913; Birth Place: Davidson, North Carolina, USA; Registration Place: Erlanger, Davidson, North Carolina, USA; Race: White; Name: Jolly Joe Allen; Registration Date: 16 Oct 1940.
https://www.findagrave.com/memorial/175192805/j.-joe-allen?_gl=1*1xg8d74*_gcl_au*ODE1Nzk3Mzc1LjE2ODM1NzcyODQ.*_ga*MTgwNDg0MjE5Ni4xNjc1Nzg4NTA0*_ga_4QT8FMEX30*ODczZDMxZmYtNjBhYy00ZTBkLWFkYTEtOTM5Y2ZjOGZlMzZhLjIwLjEuMTY4OTk2MzUxMC41OS4wLjA.
Living with his grandparents: * '''1920 Census''': "1920 United States Federal Census", Year: 1920; Census Place: Lexington, Davidson, North Carolina; Roll: T625_1295; Page: 9A; Enumeration District: 32, {{Ancestry Sharing|5115829|7b22746f6b656e223a224465474e662f2f595058592f2b6631354d6a6b76786f4a55636d6b51766e77734e665763674455655548413d222c22746f6b656e5f76657273696f6e223a225632227d}} - {{Ancestry Record|6061|10967413|ca}} (accessed 21 July 2023), Jolley Allen (7), single grandson, Go To School, in household of Henry Allen (66) in Lexington, Davidson, North Carolina. Born in North Carolina.