The Collaborative International Dictionary of English v.0.48:

Unsely \Un*se"ly\, a. [AS. uns?lig. See Un- not, and Silly.]
   Not blessed or happy; wretched; unfortunate. [Written also
   unsilly.] [Obs.] --Chaucer. -- Un*se"li*ness, n. [Obs.]
   --Chaucer.
   [1913 Webster]