I received a family group record for Duncan McArthur from Matt Gray in Ohio.In this record, there is a listing of the children of John McArthur and his second wife, Mary Lyons.This listing says there were 4 girls and 2 boys born to John and Mary.Unfortunately, the younger son is not named--it just says a son was born in 1793.(the listing says, "McArthur, John married for the second time Lyons, Mary.Their children were: McArthur, Margaret.Married Sutherland, Ebenezer 17 Oct. 1798. McArthur, Gemima.Born 1779.Married McDonald, Thomas (Capt.). Died 1875. McArthur, John.Born 1786.Married Parrett, Sarah. McArthur, (son). Born 1793. McArthur, (daughter). McArthur, (daughter)."
Let me know if you would like a copy of the record.