Desperately looking for details on a Dr. McFadden. He was probably b. about 1820-1835, was probably practicing prior to 1850, probably practicing in one of these Ohio counties: Fairfield Co, Belmont Co., or Vinton Co. He married either Mary or Margaret Barnes, whose family was living in Fairfield Co, Ohio. They were married before the 1850 census. She was the daughter of Alexander Barnes and Mary Ann Rizer of Fairfield Co, Ohio. Thank You, Kathleen Rizer