Sion's New Client Lore

I had my doubts about the new Lore, but Reborn and Sion have been fantastic so far. This is the first of the new client lores I've really liked (And it looks like they're abandoning the "3 sentence summary" thing).

But there's something I want to bring up. The last few lines of Sion's Lore are as follows:

So dark. This pit. I remember. Grand General. His whispering. What was it?

Not who I think.

Fading. Mustn't forget.

Message. Cut. Remember.

''SION – Beware ravens.''

FREE ME!

BLOOD.

Someone seems to have warned Sion that the Grand General isn't who he thinks (Not Boram), and to "beware ravens" before he went totally blood crazy. Now, Sion's name was unknown even to Swain before he found Boram's old notes, as shown in Reborn, and they refer to him as an "Unknown Noxian Hero" and things like that. So whoever it is has to be involved enough in Noxus history to know even something Swain didn't. And they seem to have been imprisoned in a "pit" of sorts.

I don't want to jump to conclusions, but best case scenario (at least for me)...

Hi Dad.

EDIT: Lots of good points being brought up. The reason I think it's not Boram giving him the warning is that after he says "Grand General" he says "Not who I think", and that Boram was dead long before he had reason to warn him about Swain (If, as theorized, Swain killed him during the Kalamanda incident). The thing about the "pit" interests me as well, why would Boram be there, unless he's not really dead, or it wasn't Boram, but someone else imprisoned with Sion, someone who should be "dead". That's what makes me think Marcus.

Another good point is the one about the Ravens. It obviously could refer to Swain, but what about LeBlanc? She has dealings with Swain a lot, and she does have a Ravenborn skin coming out... (Skins are non canon, I know, but it seems like suspicious timing)