Niamh (pronounced /niːəv/ or /niːv/) is an Irish female name. Famous examples include Niamh Kavanagh and Niamh Cusack and Niamh Bolger and Niamh Canty. Niamh Kavanagh (born 1968) is an Irish singer. ... Niamh (pronounced Neev) Cusack is an actress. ...

In Celtic mythology, Niamh was the daughter of Manannán mac Lir and Queen of Tir na nÓg. She came down on a magical horse, Embarr, one day and asked Fionn mac Cumhail if his son Oisín (pronounced /ˈɔʃiːnʲ/ or 'USHeen') would come with her to Tir na nÓg. Oisín agreed and went with her to The Land of Youth, and promised his father he would return to visit soon. Celtic mythology is the mythology of Celtic polytheism, apparently the religion of the Iron Age Celts. ... In Irish mythology, Manannán mac Lir was a sea and weather god. ... Tír na nÓg, called in English the Land of Eternal Young, was the most popular of the Otherworlds in Irish mythology, perhaps best known from the myth of Oisín and Niamh of the Golden Hair. ... In Irish mythology, Embarr (imagination) is Niamhs horse. ... Fionn mac Cumhail (earlier Finn or Find mac Cumail or mac Umaill, pronounced roughly Finn mac Cool) was a legendary hunter-warrior of Irish mythology, also known in Scotland and the Isle of Man. ... Oisín (or Ossian), son of Fionn mac Cumhail, is a poet and warrior of the fianna in the Fenian Cycle of Irish mythology. ... Tír na nÓg, called in English the Land of Eternal Young, was the most popular of the Otherworlds in Irish mythology, perhaps best known from the myth of Oisín and Niamh of the Golden Hair. ...

Oisín was a member of the Fianna and, though he fell in love with Niamh and returned with her to Tir na nÓg, he became homesick after what he thought was three years. Niamh let him borrow Embarr, who could run above ground, and made him promise not to get off of the horse or touch Irish soil. In Irish mythology, the Fianna were Irish warrior-hunters who served the High King of Ireland in the 3rd century AD. Their adventures were recorded in the Fenian Cycle. ...

The three years he spent in Tir na nÓg turned out to be 300 Irish years. When Oisín returned to Ireland, he asked where he could find Fionn mac Cumhail and the Fianna, only to find that they had been dead for hundreds of years. Whilst travelling through Ireland, Oisín was asked by some weak men to help them move a boulder. He tried to help them from his horse, but he fell, and upon touching the ground he instantly became an old man. He is then said to have dictated his story to Saint Patrick, who cared for and nursed him until he died. Meanwhile, Niamh had given birth to his daughter, Plor na mBan. Niamh returned to Ireland to search for him, but he had died. Saint Patrick (415–March 17, 493, see below) was a missionary and is regarded as the patron saint of Ireland (along with Saint Brigid and Saint Columba). ... In Irish mythology, Plor na mban (the flower of the lady) was the beautiful daughter of Oisin and Niamh. ...

The LÉ Niamh (P52), a ship in the Irish Naval Service, is named after her. LÉ Niamh (P52) is a ship in the Irish Naval Service. ... Irish Naval Jack The Irish Naval Service is the navy of the Republic of Ireland and is one of the three standing branches of the Irish Defence Forces (Óglaigh na hÉireann). ...