To add to the others (which is why you must upvote the others):
Greeks revere Byron (to the point of Βύρων[ας] Viron(as) being a name they give their kids), because he was a prominent foreign supporter of the Greek War of Independence.
What contemporary Greeks do NOT know is that Byron was a Romantic poet, and that being a Romantic poet is why he was in Greece to begin with. He could have been an ironworker, and they would have still revered him for being this guy:
As opposed to being this guy: