" Was it possible that one of Robb Stark’s brothers had survived the ruin of Winterfell? Did Manderly have a Stark heir hidden away in his castle? A found boy or a feigned one? The north would rise for either, he suspected… but Stannis Baratheon would never make common cause with an imposter. "

― George R.R. Martin , A Dance with Dragons (A Song of Ice and Fire, #5)