<prompt> Qedela umusho olandelayo: UGravell uphinde wadlala imidlalo engu-12 eqenjini elihambela amazwe iBarbarians. Uqale ukukhethwa ngo-1975, uGravell wabhekana ne-Australia XV ekuqaleni kuka-1976 ngaphambi kokujoyina uhambo lwe-Barbarian lwaseCanada kamuva ngalowo nyaka lapho adlala khona emidlalweni eyisithupha. Ngo-1977 uGravell wadlala umdlalo wakhe wokugcina namaBarbarians eqenjini elaligcwele izinkanyezi elalibhekene neqembu elalibuya  <response>: Ngo-1977 Amabhubesi aseBrithani emdlalweni wokusiza umphakathi wokugubha i-Silver Jubilee ka-Elizabeth II. Yize uGravell agcina eqenjini elahlekile, wafaka elinye lama-tries amathathu kuma-Barbarians emdlalweni obhekwa njengokuhlangana okujwayelekile. 