An Armstrong Ancestry

"Robert R. Armstrong was born probably in New York State between 1755-1765; died probably in NY, perhaps Oswego County, between 1821 and 1830. Married Mary _____ . A marriage record in Jefferson Co., Wi[sconsin] ... of his son John (no middle name) Armstrong ... states that his father was Robert Armstrong and his mother Mary Armstrong." P. [1]. Descendants and relatives lived in New York, Wisconsin, California, Minnesota, North Dakota, Nebraska, South Dakota, Illinois, Washington and elsewhere.