I had a feeling you might already know about them Efaws in WV, that's why I didn't type out all that info.
Here is some info based on what Hugh found for James Roy, son of Jack/John.Combined info from TX Dth Idx and SSDI:
Efaw, James Roy, b 27 Apr 1926; d 21 Jul 1996 El Paso Co, TX; SS card issued in TX.
Using an online directory http://www.switchboard.comhttp://www.switchboard.com there are three named Efaw listed in El Paso. Nancy & Paul at same address, probably husband and wife; and a Robert G. at a different address.Might they be children of James Roy and hence grandchildren of the elusive Jack/John?Maybe they would know something about the family.Or, know someone in the family who is.