Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Prŏcŭlus, i, m., a Roman surname: Proculum inter cognomina eum dicunt, qui natus est patre peregrinante a patriā procul. Proculos sunt qui credant ideo dictos, quia patribus senibus quasi procul progressā aetate nati sunt, Paul. ex Fest. p. 225 Müll.
Esp.,