The name Éire is the nominative form in modern Irish of the name for the goddess called Ériu in Old Irish, a mythical figure who helped the Gaels conquer Ireland as described in the Book of Invasions. Éire is still used in the Irish language today to refer to the island of Ireland as well as the Republic of Ireland - as well as the goddess. The dative form Éirinn is anglicized as Erin, which is occasionally used as a poetic name for Ireland in English, and has also become a common feminine name in English. The name was given in Article 4 of the 1937 Irish constitution to the Irish state, created under the 1921 Anglo-Irish Treaty, which was known between 1922 and 1937 as the Irish Free State. Article 4 stated that: "The name of the state is Éire, or, in the English language, Ireland." Article 8 states that Irish is the first official language.********************Pious legend credits Patrick with banishing snakes from the island, though post-glacial Ireland never actually had snakes;one suggestion is that snakes referred to the serpent symbolism of the Druids of that time and place, as shown for instance on coins minted in Gaul (see Carnutes), or that it could have referred to beliefs such as Pelagianism, symbolized as “serpents”. Legend also credits Patrick with teaching the Irish about the concept of the Trinity by showing people the shamrock, a 3-leaved clover, using it to highlight the Christian belief of 'three divine persons in the one God' (as opposed to the Arian belief that was popular in Patrick's time). Whether or not these legends are true, the very fact that there are so many legends about Patrick shows how important his ministry was to Ireland. Some Irish legends involve the Oilliphéist, the Caoránach, and the Copóg Phádraig. ********************************** The 12th century work Acallam na Senórach tells of Patrick being met by two ancient warriors, Caílte mac Rónáin and Oisín, during his evangelical travels. The two were once members of Fionn mac Cumhaill's warrior band the Fianna, and somehow survived to Patrick's time. They travel with the saint and tell him their stories.***********Saint Patrick's Day (Irish: Lá 'le Pádraig or Lá Fhéile Pádraig), colloquially Paddy's Day, is the feast day which annually celebrates Saint Patrick (386-493), the patron saint of Ireland, on March 17. It is the Irish national holiday and one of the public holidays in the Republic of Ireland (a bank holiday in Northern Ireland); the overseas territory of Montserrat; and the Canadian province of Newfoundland and Labrador. In the United States it is widely celebrated, although not an official holiday.