Kezcol,
I am directly related to William Bigley. He was my Great Great uncle and I got in touch with the paper to tell them how he got the medal. You mention that you have a photo of William and another of what you believe to be his brother or father. I would be very interested to see that photo. I have photos of all the brothers but one.
These include Robert Nichol Bigley, Daniel Bigley, John Henry Bigley, Thomas Bigley, and William Bigley and sister Ruth Sarah Bigley. Missing George!. I also have one of their mother Maria Ray and there uncle and Aunt Thomas bigley born 1861.
I have been comiling a booklet and so may be able to name the man you have or at least confirm that it may be George or his father.