Lots of planes have aquired the name of "widowmaker", due to some type of nastyness in their flight characteristics.. Or, a reputation for catastrophic failure in the air, deserved or not.. All it takes is the bad rep, to get the name stuck on it..
A few not mentioned so far, Sopwith Camel, GeeBee Racer, Mig3, F100 Super Sabre, F104 Starfighter, AV8a Harrier..
RC