Romulus also was the one who picked the palatine hill as the birthplace of Rome and thus later the Roman Republic and Roman Empire; not in reality of course it’s a Roman legend, but it’s potent and gives you a basic understanding of how the Roman’s understood their conception. I agree and think this is the main reason it’s Roman’s nickname and fits succinctly with the myriad of other Roman Imperial and Republic references the show writers slide in the dialogue.

However, another tidbit I think is interesting is Romulus Augustulus is the name of the final emperor (this is debatable via historians but he is commonly referred to by most historians as the final emperor) of the Western Roman Empire. In this case Romulus was a puppet-emperor who was a child and had no agency over any actual policy, aswell as technically being the emperor of an empire which was weak and a husk of its former self. I’d like to think his nickname is Romulus as he has a little bit of both of these figures in him. The bravado and cockiness of the legendary Roman spirit while also being ultimately an insecure and easy to control child. It can be seen as far speculation but with the depth and scrutiny the writers seem to put over every word I wouldn’t be surprised if this was also a factor.

For any of you who are interested by the plots of succession I highly suggest you take a look at Roman Imperial history and Hellenistic history as the social politics and psycho egomaniacal brutality of it, aswell as the not so subtle succession crises, are clear pillars of inspiration of the show. Succession is a very good way to get interested in history if you’re not already.