A family member is looking for more information on his gr.-gr.-grandmother, Mary Jane McElroy Anderson, born 15 Nov 1821 in Harrison County, Ohio, daughter of Robert McElroy and Mary (Polly) McFadden. Mary Jane died before 1860, not certain when or where or where she is buried, but it's believed it may be in Pike County, Illinois. She was married to Robert A. Anderson 14 April 1842 in Pittsfield, Pike County, Illinois. Any information you may be able to provide me would be very appreciated. Thank you.