Age is out, but looks a good possible that John is alive in 1871, living with daughter and family. Place names as transcribed.
1871 - Newton, Montgomeryshire
Piece 5615
Folio 68
Page number 4
Richard Corbett 38 Head
Ann Corbett 35 Wife Llanllwchaiarn, Montgomeryshire
Richard Corbett 17 Son
John Corbett 15 Son
Mary J Corbett 10 Daughter
John Liews 80 Boarder, widower, no employment, Llanwyddelan, Montgomeryshire
Ann Lewis
Marriage Age 18
Birth Date 1835
Marriage Date 23 Jan 1853
Marriage Place Llanllwchaearn, Montgomeryshire, Wales
Father John Lewis
Spouse Richard Corbett
Marriage image online, John not with family in 1881
Cas