In the Wikipedia article about brands, they give a few different examples of brands that existed in antiquity. A couple examples are given for ancient Rome, such as Umbricius Scaurus, a manufacturer of fish sauce in Pompeii, CE 35, and Ennion, a maker of glassware. The former is mentioned in the article as having been found all across the mediterranean, where I imagine his name/brand would have told anyone that this is some quality garum.
What are some other examples of "famous" or "known" brands in the Republic or Empire? It doesn't need to be specific to a person's name as long as it informed the Romans about qualities of the the product in the way a brand does.