"The snows trapped Stannis" army. I proposed to ask for the blessing of R'hllor to help melt the snow and bless us in our fight. The blessing required a sacrifice of king's blood to the one true God." Davos looked ready to explode, and Sansa looked ready to puke. "Stannis sent his squire, Daven Seaworth, to bring Princess Shireen. He chose to run away with the princess in the northern snows. The battle was lost."