Yep it's Errol Flynn, the other bloke was one of the best ever character actors.
There was a bloke called Errol Flynn in the valleys. True story, he died when a car fell on his head after not being jacked up properly.
When I was a kid I'd do the old "What do you call a man with a car on his head? JACK" joke, but my dad would reply with
"What do you call a man with a car on his head? Errol Flynn". He'd fall about laughing, and to this day I still don't get the joke.