Hello Your Samuel G. Brotherton was one of at least three sons of Robert Brotherton b.12/25/1760 in Cumberland/Franklin County Pennsylvania and Dorothea Reichard. Robert is a brother of James (my ancestor). Both are on the 1800 Census for Waterford Twnshp, Erie county. Unfortunately, a fire in the Erie County courthouse destroyed most of the court records in 1823 and my efforts to track James have failed. Both appeared to have served in the Revolutionary War and Robert was a prominate business man in Waterford. I have not done much research in the past few years but if I can help let me know.