Most historians believe that this title was held at times by an interrex and was elective, which would explain why its holders' average reign was over 40 years. One holder of this title had the name of his father omitted from his entry on a list of successful generals because that man was the son of a slave. This title (*)  was also held by the husband of Tanaquil as well as a man who built the seaport at Ostia. Early holders of this title warred with the city of Alba Longa, and Titus Tatius ruled alongside the first holder of this title. This title was eschewed by later rulers of its namesake city-unsurprising given the fate of its last ruler, Tarquinius Superbus. For ten points, name this title held by seven people including Numa Pompilius, Servius Tulius, and Romulus.
Most historians believe that this title was held at times by an interrex and was elective, which would explain why its holders' average reign was over 40 years. One holder of this title had the name of his father omitted from his entry on a list of successful generals because that man was the son of a slave. This title (*)  was also held by the husband of Tanaquil as well as a man who built the seaport at Ostia. Early holders of this title warred with the city of Alba Longa, and Titus Tatius ruled alongside the first holder of this title. This title was eschewed by later rulers of its namesake city-unsurprising given the fate of its last ruler, Tarquinius Superbus. For ten points, name this title held by seven people including Numa Pompilius, Servius Tulius, and Romulus.
Most historians believe that this title was held at times by an interrex and was elective, which would explain why its holders' average reign was over 40 years.
King of Rome  (do NOT accept "Emperor" or "consul")