I am sorry I cannot be of help as the Edgar in my tree was by a second marriage to my great grandmother's sister, and I don't have much information on the family. They did however have Cumberland connections... if you can determine a likely range for the date of birth George Edgar, that would be helpful to people who may be able to help you.
This is the most recent I have for the Edgar's in my family:
1901 census RG13/4868 Folio 83 page 19 civil parish Caldewgate and Carlisle. Town Carlisle
Address 11 Cumberland Street
Francis Edgar head age 35 Railway Engine Fitter born Jersey (island)
Jane Edgar wife age 36 born Scotland (my ggrandmother's sister, Francis' second wife)
Jane dau age 8 born Scotland
Alice dau age 6 born Scotland
Albert son age 2 born Workington Cumberland
(note Jane and Alice were daughter's from Francis' first wife, also a Jane)
Good luck!