Talasius is also known as Thalasius, Talassus and Talassio is a god of marriage in Roman mythology.Klaus-Dietrich Fabian: Talassio, in: Der Kleine Pauly, vol. 5, 1975, new edition Nördlingen 1979, , col. 501-502. His equivalent in Greek mythology is Hymen. His name was called out during marriages. The name was derived from Thalasus, which means "wool-basket". Later accounts state that he is friend of Romulus, and that he played a role in the rape of the Sabine women.
References
Sources Catullus, 61, 134. Livy. History of Rome i, 9.12. Plurarch. Quaestiones Romanae, 31.