Romulidae
Frieze-Dennison Vergil
Rōmulidae, ārum, m.: descendants or people of Romulus; Romans, 8.638. (Rōmulus)
Could not find Romulidis in Logeion dictionaries.
Romulidis Proper-name noun: masculine ablative plural, Proper-name noun: masculine dative plural of Romulidae
Rōmŭlĭdae, ārum, v. 1. Romulus, D.
Rōmŭlĭdæ, (14) ārum et um, m. , descendants de Romulus, les Romains : Lucr. 4, 681 ; Virg. En. 8, 638.
Romulĭdae
A patronymic given to the Roman people from Romulus, their first king, and the founder of the city (Verg. Aen. viii. 638).