The Loyal Traitor was created in 1965.
traitor
No, he was Loyal to the Crown. To be a traitor one has to change sides or allegiance, which William never did.
The Traitor's Emblem was created in 2011.
Traitor Spy was created in 1939.
Traitor to the Living was created in 1973.
Traitor's Purse was created in 1941.
The Queen's Traitor was created in 1967.
Time is the Traitor was created in 1953.
Torments of the Traitor was created in 2006.
Traitor - comics - was created in 1999.
My Traitor's Heart was created in 1989.
Traitor's Blood was created in 1983.