Found a C. D. March (Marsh) in Hazard, Perry County, KY in 1930. It really comes close to your father's family.
C. D. March 42
Athel (Gethel/Cethel)? 34
So that may support the death record I found for him that read he died in Hazard, Perry Co., KY.
Can't seem to find much about your father or George but I am still searching.