A Wolf has been named king of Rome/Carthage/Persia/Egype/Bablyon/Assryia.
When and how would you place this into history?
Do you mean an actual wolf, Canis lupus??? Not a Spaniard named Lobo, say? Or an HRE Guelph/Welf?
If you mean the wild animal, it would be ... strange. Almost certainly it would be for religious reasons. Probably as an avatar of a wolf god, say. Which, since there werent any such in otl's history, would likely require the conquest of one of those empires by a barbarian clan that had a wolf totem - which evolves into a wolf god.
Thats the best I can do.