In looking for Nancy Mattingly widow of William d 1817 in the census index of 1820, I didn't find Nancy but did find these alleged Mattinglys with different surname spellings. Maybe they will be of some help for someone. Census Index: U.S. Selected Counties, 1820 Matina, Jonathan State : KY County : Henry Co. Year : 1820 Page # : 218 Matingby, Ignatius State : KY County : Madison Co. Location : Richmond Year : 1820 Page # : 178 Matinger, John State : PA County : Philadelphia Co. Location : Passyunk Twp Year : 1820 Page # : 143 Matingley, Barnet State : KY County : Grayson Co. Year : 1820 Page # : 146 Matingley, Bennit State : KY County : Grayson Co. Year : 1820 Page # : 146 Matingley, Zacheriah State : IL County : Gallatin Co. Year : 1820 Page # : 76 Age ranges in household : 01-04-00-00 Matingly, Edward State : KY County : Washington Co. Year : 1820 Page # : 061 Matingly, Gabriel J. State : MD County : Frederick Co. Year : 1820 Page # : 081 Matingly, James State : VA County : Fairfax Co. Location : Truro Parish Year : 1820 Page # : 069 Matingly, Thomas State : IN County : Perry Co. Year : 1820 Page # : 149 Matingly, Thomas State : MD County : Prince George's Co. Year : 1820 Page # : 223