Tenzing Norgay is well remembered.

So maybe he's the fake Iris and the shock of it returns Catelyn to herself. He does seem the most expendible one of the crew…

Unless that is Harry Wells blurting it not HR. Or someone else with a disguise gadget. All of this would require someone else being ok with HR sacrifice…

The whole point of going off to earth2 was so barry wouldn't know and savitar remember. So even if that wasn't savitar Barry it was incredibly stupid of HR to say where Iris was because telling real Barry was also telling savitar. Unless of course that wasn't Iris. Everyone seems to think it was HR.

At one point Ragnar actually says "Winter is coming".