You might find this interesting:
There is a bio of Godfrey Guseman Murdock (1837-1899) at
www.minerd.com/bio-murdock.
The biography begins:
"Godfrey Guseman Murdock was born 1837 in Preston Co, WV, the son of John S. and Rebecca (Miner) Murdock. He apparently was the namesake of an uncle, and was called 'one of (the) best known citizens' of Wheeling, Ohio County, WV, 'whose name is legion' among friends."
I particularly noted that this Godfrey was named for an uncle, which implies that John Murdock might be the son of Susannah (Guseman) and Thomas Murdock. And that Susannah might have had a brother named Godfrey.
Meanwhile, I will get back to trying to sort through Abraham, Joseph, Christopher and Godfrey.........