Siorna Saoghalach King of Ireland [60866]

   Cause of his death was slain in battle of Ailinn, A.M. 3155, by Rotheacht the Second, his Hiberian successor.

  General Notes:

http://www.rpi.edu/~holmes/Hobbies/Genealogy/ps11/ps11_053.htm

was the 34th Mon arch; he obtained the name "Saoghalach" on account of his extraordinary long life; slain, B.C 1030, at Aillin, by Rotheachta, of the Line of Heber Fionn, who usurped the Monarchy, thereby excluding from the throne

Part III, Chapter IV of Irish Pedigrees, by John O'Hart, published 1892, pages 351-9, 664-8 and 708-9.

Events in the life of Sírna Sírsáeglach mac Dian

event 1 .
1180 B.C. , in age of the world 4020.
·wrested, at the the battle of Aircealtair over the Ultonians, the government of Teamhair (Tara) from the Ulta, i.e. the race of Ir
† death 1 .
1030 B.C. , in the Battle of Ailinn.
·He was slain in battle, A.M. 3155, by Rotheacht the Second, his Hiberian successor.


http://en.wikipedia.org/wiki/S%C3%ADrna_S%C3%A1eglach

Sírna Sáeglach ("the long-lived"),[1] son of Dian, son of Demal, son of Rothechtaid mac Main , was, according to medieval Irish legend and historical tradition, a High King of Ireland . He separated the province of Ulster from the authority of the High King, and is said to have made war against the Ulaid , who had killed his great grandfather, for a hundred years according to the Lebor Gabála Érenn ,[2] 150 years according to the Annals of the Four Masters ,[3] but Geoffrey Keating , citing an ancient poem, gives him only twenty-one years.[4] According to one version of the Lebor Gabála, the Ulaid united with the Fomorians and gave him battle at Móin Trógaide in County Meath , but a plague fell on them and the leaders of both sides died. According to another version, agreed by Keating and the Four Masters, Sírna was killed by Rothechtaid Rotha at Alind. The Lebor Gabála synchronises the start of his reign with the reign of Deioces of the Medes (694\endash 665 BC), and his death with his successor Phraortes (665\endash 633 BC). The chronology of Keating's Foras Feasa ar Éirinn dates his reign to 814\endash 794 BC, that of the Annals of the Four Masters to 1181\endash 1031 BC.

References
1. ^ Dictionary of the Irish Language (DIL), Compact Edition, Royal Irish Academy, 1990, p. 515
2. ^ R. A. Stewart Macalister (ed. & trans.), Lebor Gabála Érenn: The Book of the Taking of Ireland Part V, Irish Texts Society, 1956, pp. 241-245, 459-461
3. ^ Annals of the Four Masters </wiki/Annals_of_the_Four_Masters> M4019 <http://www.ucc.ie/celt/published/T100005A/text010.html>-4169 <http://www.ucc.ie/celt/published/T100005A/text011.html>
4. ^ Geoffrey Keating , Foras Feasa ar Éirinn 1.26 <http://www.ucc.ie/celt/published/T100054/text036.html>

Siorna married.