Greetings, and a warm welcome to Rootschat.
The likeliest option is that you will not be able to find George's father, BUT - there is a slim possibility that if you can track a baptism record in a parish register that there may be a note of the father's name.
If George does name a father on his marriage certificate you can not assume that this information is accurate unless you can substantiate it from a second source.
Good hunting
Philip