I have been researching the Anthony's of Western Pennsylvania for some time now and came across something that may interest you:

Peter Fidler, of Redbank Township, Armstrong County (now Clarion County), PA, died in 1839. His children listed are: Stephen, Margaret (wife of James Anthony - thus my interest in the family), George, John, Barbara, Mary Ann and the following children in their minority: William, David, Elizabeth, James and Elias. No wife of Peter is listed - but when I was looking into the Fidler families on the census, I came across S. Fidler (1850 census for Rock Island, Illinois) with many children listed and 2 older women: Nancy, aged 62 (could be his mother) and Ann, aged 43 (could be Mary Ann, a sister). Nancy is again listed with Stephen Fidler on the 1860 census for Frankfort, Pepin, Wisconsin.

I do not know if this helps you - my only interest is in trying to figure out who James Anthony is.

I do not know if this is the Stephen Fidler you are looking for, but the age fits well and he was born in PA.