????
                     Gervais, Pierre (b:)(d:)
                    |          ????
           Jarvis, Joseph (b:1829-1830)(d:)
          |         |          ????
          |          Simard, Therese (b:)(d:)
          |                    ????
 Jarvis, David (b:1855-1856)(d:1922)
          |          ????
           Montjean, Jemima Adelina (b:1833-1834)(d:1881)
                     ????