158 Votes in Poll
Rockstar confirmed that Red Dead Revolver did not take place in the same universe as the Redemption saga, so Uncle cannot be Red Harlow. Third question down.
https://www.gamespot.com/articles/red-dead-redemption-undead-nightmare-qanda/1100-6282212/
Red Dead Redemption Undead Nightmare Q&AGameSpot
As for what Aiden said, I agree that they’re the main reasons some people think Uncle is Red Harlow, though that doesn’t necessarily make them justified.
In response to 1. - Such continuity between Revolver and the Redemption saga is non-existent as Rockstar have confirmed it to be such. Nothing can be stronger than Rockstar’s official word. Furthermore, Uncle was born sometime in or prior to 1849; unless Revolver happens in c. 1860s, Uncle wouldn’t even be the right age.
In response to 2. - I highly doubt Uncle was called the “One Shot Kid”. During the instance in which he said it, he was bantering with Arthur and therefore probably wasn’t being serious. What’s more, he’s known to have been a petty criminal, and if so, it wouldn’t make sense that he’d be some legendary gunslinger.
Some very convincing arguments in opposition to the theory on this thread but let me pose a single counter-argument in the form of an image:
As you can see, the resemblance is striking, if not identical.
In all seriousness though, setting aside the separate universe point, their respective ages don't even line up. Uncle seems quite a bit older than what Harlow would even be by the events of RDR 2.
