I am indirectly interested in this Maddera family. Archibald Maddera married Mary Oney, who was the daughter of Masey Booth Oney Tilllott Maddera.Masey was two previous times a widow, she married Thomas Maddera in 1812.I feel sure that Archibald was the son of this Thomas Maddera, by a previous wife of course.I think proof of this is easily available in Virginia records, I've never really tried to find it. They were basically of Surry County, but, for some reason spent some time in Botetourt County.
My connection, is that ayounger sister of Mary Oney, Matilda Oney, married William BartLee, of which little to nothing is known previous to when they married in 1817.I'm curious if this Maddera family had close contacts with any Lees down thru the years before the early 1800s.
Feel free to contact me, however, I've probably told you about all I know at this time.