I agree that Rasputin stopped the traveler, I think I saw that in the grimoire, but we do know of another warmind, Charlemagne. I'm 100% on this because for the IKELOS Core Repair you have to do 3 warsats, 2 say RAS on them (Rasputin) and one says CHLM (Charlemagne)
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There's also a warmind named Martel. IRL, Charles Martel was Charlemagne's grandfather.