Pure speculation, but if the Eden Rose (Potemkin-class) isn't originally of Clan Blood Spirit, I will be truly shocked.
My rationale:
1. It's named after something that is pinkish/reddish. Common theme with the Blood Spirit warship names.
2. The Eden Rose itself (the flower) is named after a poet who also served as a diplomat.
3. Almost every Clan warship fleet has at least one Potemkin. Talking about the 3050s-3060s. The Nova Cats have a LOT of Carracks instead, the Crusader Wolves lost theirs to the Exiled Wolves, and the Jade Falcons don't but otherwise have a large fleet, that's it. All the other Clans, even the Fire Mandrills and Ice Hellions, had a Potemkin. The Blood Spirits don't... and I wonder if it's because they traded it away.
I can come up with arguments for a few other vessels in the Snow Raven fleet. Morning Violence makes me think "red sky in the morning" or a red sunrise, and keeps with the red theme, Scabbard (has been used as a symbol of peace, and keeping a blade in its scabbard can be seen as a moment in which one is using words and not swords), Kerensky's Hope (feels extremely optimistic, reminiscent of the Blood Spirits early days as a unifying force, but a philosophy they had gotten away from over the decades and they then might have discarded the ship as well, but weak argument I admit), Bloody Talon (they already have a Blood Kite, Blood Fury, Stooping Kite, it fits, even if it also fits with bird Clans as well). However, all of these are mostly based on 1 rationale as opposed to multiple ones. Weak arguments.
I'd stand by Eden Rose a bit; the others just make a short list of respectable possibilities in my mind.
We also have to be mindful of the fact that the Clans have been known to rename warships. So, it's also just possible the Snow Ravens renamed their former Blood Spirit warships in the same process of recommissioning them as Snow Raven warships.