Source : Webster's Revised Unabridged Dictionary (1913)

Desponsage \De*spon"sage\, n. [From L. desponsus, p. p. See
   {Despond}.]
   Betrothal. [Obs.]

         Ethelbert . . . went peaceably to King Offa for
         desponsage of Athilrid, his daughter.    --Foxe.