(Son?) of Roland? If this refers to Roland ORZABAL of Tears for Fears fame, he has two sons, Raoul and Pascal.
Roland.
The "Song of Roland" is about King Charles', Charlemagne, attack on him from the rearguard while traveling through Spain. He is betrayed by Ganelon one of his men. The enemy of the story is another...
He dies.
I believe it is Roland. I could be wrong though. :)