The Collaborative International Dictionary of English v.0.48:

Connubiality \Con*nu`bi*al"i*ty\, n.
   The quality of being connubial; something characteristics of
   the conjugal state; an expression of connubial tenderness.
   [1913 Webster]

         Some connubialities which had begun to pass between Mr.
         and Mrs. B.                              --Dickens.
   [1913 Webster]