Ethan Allen's brother Levi had many children with wife Nancy Gilman Allen. He was an absent, alcoholic father who pretty much abandoned his family and died with enormous debts. His wife didn't claim his body because that would have made her liable for his debts. I believe he also fought in the Revolutionary War.
Although Ethan Allen had two wives, few of his children who survived to adulthood reproduced. The Virginia connection seems quite legit.
I have a feeling that many people named Allen, including perhaps Levi's descendants, told their descendants they were related to or descended from Ethan.
Having said that, does anyone know of a connection to Allens in Pennsylvania? My great, great grandmother Mary Allen married James Kelley, and they lived in Milwaukee, Wi. My grandfather Allen (Lafayette) Martin (1893-1962) would spend time in the summer with relatives in Michigan when he was a boy. I don't think their name was Allen, but I think they have Allen relatives.