My great-great grandfather Henry Birge (Michigan) was a brother to William & Leander Birge (Wisconsin). I got this info on a biography done by Waterford Township Public Library on Henry. I had already traced back to my great-great-great grandfather William as he lived w/Henry prior to his death. According to this bio William's father was an Elijah Birge, a officer in the Revolutionary war. He was in Conn. He also lived in Pennslyvania. I have him there in Susquehanna Cty in 1810. I haven't been to library to do any other research since obtaining this bio. I'd appreciate anything further you could give me. My dad was the last Birge in his line. His father was George S. son of Henry, who moved to Kansas in late 1800s.