Who Played the Fiddle?

Teacher: "What ancient ruler was it who played the fiddle while Rome was burning?" Johnny: "Hector, ma'am." Teacher: "No, not Hector. Hector was no ruler, he was a Trojan prince. Try again." Johnny: "Then it was Duke!" Teacher: "Duke? What do you mean Johnny?" Johnny: "Well then, it must have been Nero... I knew it was someone with a dogs name."