Pompey Magnus, I'm betting.
"To the historians of his own and later Roman periods, the life of Pompey was simply too good to be true. No more satisfying historical model existed than the great man who achieved extraordinary triumphs through his own efforts, yet fell from power and was, in the end, murdered through treachery.
He was a hero of the Republic, who seemed once to hold the Roman world in his palm only to be brought low by his own poor judgment and Caesar. Pompey was idealized as a tragic hero almost immediately after Pharsalus and his murder: Plutarch portrayed him as a Roman
Alexander the Great, pure of heart and mind, destroyed by the cynical ambitions of those around him. It was this portrayal that survived into Renaissance and Baroque portrayals of him, such as Corneille's
The Death of Pompey (1642)."
That's wiki-fluff, but the Bard never let the truth get in the way of a good story either. He probably would have tossed in something like "...and btw, Henry VIII and the Tudors are a lot more practical than Pompey but also awesome so you're getting Pompey with the errors fixed with the Tudors!"
Ah, I love paraphrasing Shakespeare's hackery. (That doesn't mean he wasn't a good writer, but that's not why they paid him!)