Strange ambush

[Taytay24]

Hi all. New here. So I'm playing rdr2 and just trying to get 100% as I'm finished the main story and just finishing off what's left. Upon my travels just outside of valentine next to citadel rock I get ambushed by 5 or so men. I shoot them and as I'm about to shoot the last one he tells " I can't wait to take that gun from your dead hands" . Or something along that line. Very specific. Now when I went to loot them, it said stranger?? I've only ever been ambushed by gangs. I have multiple rare guns on me, maybe they are tryig to take one of the rare guns I have. If anyone has had this before and knows who they are let me know, thanks.