Need help please with finding a story seed

I swear, at some point, I read in one of my Ars Magica supplements, I read about a Greek Goddess, Hecate, Styx, Nyx, something like that, who wanted PC help for fixing something, I think in Constantinople related to the sack in 1204. I swear that I read in the Sundered Eagle. Except I've looked through that book 4 times now for the reference and can't seem to find it. I've begun skimming other supplements for this story seed/reference, and can't seem to find it. I have a complete collection, so I figure I'd ask here in case someone else remembers what I'm talking about, or can verify that I'm just going crazy.

The other games I have are VtM, Rogue Trader, Star Wars Saga Edition and Scion, so I'm pretty sure it's not something I read in any of my other RPG books.

I think what you're looking for is on page 33 of City and Guild.

Yes, that is it. It also explains why I couldn't find it, I had loaned the book to my brother!!