There are a Fred and Mary Jane Allford, with Stephen Miller, stepson, living in Luzerne Cty PA, Miner's Mills Boro in 1920; this is the closest I got to your Fred Charles.
If he was in the military and you are his son, and he is deceased, you can apply to get his military records at www.nara.gov
. You can also apply for census records after 1940 at the NARA site.
Try looking for his name at www.familysearch.org
for SSDI or other records and work from that point on.
Good luck to you.