Gender masculine Geronymos is a Latin transcription of Greek name Γερώνυμος.Feasts and saints related to given name Geronymos St Jérôme Feast day June 15 When is Geronymos's name day? Geronymos's Day is celebrated on June 15 in memory of St Jérôme. Log in or register to post comments Be the first to rate this name Leave this field blank