The Collaborative International Dictionary of English v.0.48:

Survivance \Sur*viv"ance\, Survivancy \Sur*viv"an*cy\, n. [F.
   survivance.]
   Survivorship. [R.]
   [1913 Webster]

         His son had the survivance of the stadtholdership.
                                                  --Bp. Burnet.
   [1913 Webster]