Source : Webster's Revised Unabridged Dictionary (1913)

Doucepere \Douce"pere`\, n. [F. les douze pairs the twelve peers
   of France, renowned in romantic fiction.]
   One of the twelve peers of France, companions of Charlemagne
   in war. [Written also {douzepere}.] [Obs.]

         Big-looking like a doughty doucepere.    --Spenser.