One Lepidus, Two Lepidus....

Being someone who veers towards the side of history and archaeology, I immediately picked up on the mention of the four members of the Lepidum family who all, according to Namantius met an unlucky end.  My first thought was while Lepidus the triumvir must have still be well known to the general population, how many of the other three would Namantius' readers actually know?  Since he only gives two lines to each individual describing a single event of their downfall and their dates range from 77 BC to 39 AD, almost 500 years before Namantius was writing, would his readers have picked up on the allusion.  Additionally, while he mentions the ill-repute of this family, Lepidus the Triumvir's grandfather was highly praised by Livy, Polybius and Diodorus Siculus, and held a number of high offices including consul.  Had Namantius known about this earlier exemplar of Roman values, would he still have questioned the damnation of the line?  As this digression remains only marginally linked to his story of travel (through one of the locations he sights), perhaps the  curiosity of this linage held a personal attraction for the poet, or perhaps he is simply showing of his knowledge of the history of the empire of his dear city.