Playing with William and Mary....
1841 Moorlinch (Edington) HO107 964 11 16
William Norris 55 Y =1786 Army P
Mary 45 (F)
Robert 9
Could be him here...

Royal Hospital Chelsea: Soldiers Service Documents WO 97/564/113WILLIAM NORRIS Born ATHERTON, Somerset Served in 40th Foot Regiment Discharged aged 38 . WILLIAM NORRIS Born ATHERTON, Somerset Served in 40th Foot Regiment Discharged aged 38 40th Foot: Mah - Per Date range: 1807 - 1820.