Possibly derived from the name of the ancient city of Larisa in Thessaly, which meant "citadel". In Greek legends, the nymph Larisa was either a daughter or mother of Pelasgus, the ancestor of the mythical Pelasgians. This name was later borne by a 4th-century Greek martyr who is venerated as a saint in the Eastern Church. The name (of the city, nymph and saint) is commonly Latinized as Larissa, with a double s.