And there'd be no way to get the name and their appearance linked up, unless someone asked a Valakian, or any of the other species that lay between Ferignar and Valakia that Ferengi had been visiting in the two centuries between Enterprise and Next Generation.
If they had been. Exploration and expansion aren't always some perfect straight-line process. The first Europeans (that we know of) to reach North America did so in 1000 CE, the Norse settlers of Vinland; but then the settlement failed and civilizations went through ups and downs and no European visited the Americas again until 492 years later.
In one of my books (I think it was Department of Temporal Investigations: Watching the Clock), I suggested that the Ferengi had undergone an economic collapse sometime in the late 22nd or early 23rd century and didn't recover as an interstellar power for over a hundred years.