Just found out that Ulysses might have been Victor's owner when he was living in goodsprings. O_o
Possible. Seems a little farfetched to me, but it's possible. There aren't many Old World flags present in NV, and those that are seem to have something to do with Ulysses. One is at his shack on Wolfhorn Ranch, he has a flag on the back of his clothes, and the Courier is supposed to fight him "beneath the Old World flag" in the Lonesome Road DLC, according to Christine.
As far as I know, the last one is on Victor's shack in Goodsprings, and although nobody lives there now, some inhabitants of Goodsprings say his owner lived there. I believe Trudy says the owner was already gone when she took over the saloon seven years ago. He could've moved to Wolfhorn Ranch then.