The Collaborative International Dictionary of English v.0.48:

Schade \Schade\, n.
   Shade; shadow. [Obs.]
   [1913 Webster]

   Note: English words now beginning with sh, like shade, were
         formerly often spelled with a c between the s and h;
         as, schade; schame; schape; schort, etc.
         [1913 Webster]