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Lower Mac William
Mac William Íochtar
Lower Mac William Mac William Íochtar
c. 1330–1602
	Coat of arms
	County Mayo, c. 1590 ; Mac William Íochtar territory (dark green) ; Vassals of Mac William Íochtar (light green)
Capital	Kilmaine (inauguration site)
Common languages	Irish
Religion	Roman Catholicism
Government	Tanistry
Chief
• 1332–1375	Edmond Albanach de Burgh
• 1595–1602	Tibbot MacWalter Kittagh Bourke
History
• Established	c. 1330
• Disestablished	1602
ISO 3166 code	IE
Preceded by	Succeeded by
	House of Burke
County Mayo
Kingdom of Ireland

Mac William Íochtar (Lower Mac William), also known as the Mayo Burkes, were a fully Gaelicised branch of the Hiberno-Norman House of Burgh in Ireland. Mayo covered much of the northern part of the province of Connacht and the Mac William Íochtar functioned as a regional king and received the White Rod. The title was a successor office to the Lord of Connacht which ended upon the assassination of William Donn de Burgh, 3rd Earl of Ulster, in June 1333.

History

As a result of the Burke Civil War of the 1330s, the Lordship of Connacht was split between two opposing factions of the de Burgh family: the Burkes of Mac William Uachtar (or Clanricarde) in southern Connacht and the Mac William Íochtar Burkes of northern Connacht. For over three hundred years, the two families dominated the politics of the province, frequently fighting each other for supreme rule of both the Anglo-Irish and Gaelic-Irish peoples.^[1]

List of Mac William Íochtar

Edmond Albanach de Burgh, 1st Mac William Íochtar (1332–1334), died November 1375
Thomas mac Edmond Albanach de Búrca, 2nd Mac William Íochtar (1375–1402)
Walter mac Thomas de Búrca, 3rd Mac William Íochtar (1402– 7 September 1440)
Edmund na Féasóige de Búrca, 4th Mac William Íochtar (1440–1458)
Tomás Óg de Búrca, 5th Mac William Íochtar (1458–1460)
Risdeárd de Búrca, 6th Mac William Íochtar (1460–1469), died 1473
Ricard Ó Cuairsge Bourke, 7th Mac William Íochtar (1469–1473), died 1479
Theobald Bourke, 8th Mac William Íochtar (1479–5 March 1503)
Ricard Bourke, 9th Mac William Íochtar (1503–7 July 1509)
Edmond de Búrca, 10th Mac William Íochtar (1509–23 February 1514)
Meiler Bourke, 11th Mac William Íochtar (1514–28 April 1520)
Edmond de Búrca, 12th Mac William Íochtar (1520–29 September 1527)
Seaán an Tearmainn Bourke, 13th Mac William Íochtar (1527–?)
Theobald mac Uilleag Bourke, 14th Mac William Íochtar (?–1537)
David de Búrca, 15th Mac William Íochtar (1537–?)
Ricard mac Seaán an Tearmainn Bourke, 16th Mac William Íochtar (?–1571)
Seaán mac Oliver Bourke, 17th Mac William Íochtar (1571–1580) and Baron Ardenerie (1580)
Richard the Iron Bourke, 18th Mac William Íochtar (1580–1582)
Richard Bourke, 19th Mac William Íochtar (1582–1586)
William "the Blind Abbot" Bourke, 20th Mac William Íochtar (1586–Abolition, 1593)
Tibbot MacWalter Kittagh Bourke, 21st Mac William Íochtar (Restoration, December 1595–March 1601) and Marquess of Mayo (Peerage of Spain, 1602)
Richard "the Devils Hook" Bourke, 22nd Mac William Íochtar (March 1601–October 1601)
Tibbot ne Long Bourke, 23rd Mac William Íochtar (October 1601–Abolition, January 1602) and Viscount Mayo (1637)

In 1594, Tibbot ne Long Bourke, one of the most prominent men in the country and son of Richard "the Iron" Bourke, 18th Mac William Íochtar (d.1582), accepted terms of surrender and regrant. In 1627, he was created Viscount Mayo.^[1]^[2]

Genealogy

de Burgh Genealogy

Walter de Burgh of Burgh Castle, Norfolk m. Alice
- William de Burgh (d. 1206) m. Daughter of Domnall Mór Ó Briain, King of Thomond
  - Richard Mór / Óge de Burgh, 1st Lord of Connaught m. Egidia de Lacy, Lady of Connacht
    - Sir Richard de Burgh (d.1248), 2nd Lord of Connaught
    - Walter de Burgh, 1st Earl of Ulster (d. 1271)
      - Richard Óg de Burgh, 2nd Earl of Ulster (1259–1326)
        John de Burgh m. Elizabeth de Clare
        William Donn de Burgh, 3rd Earl of Ulster (1312–33) m. Maud of Lancaster
        Elizabeth de Burgh, 4th Countess of Ulster (1332–63) m. Lionel of Antwerp, 1st Duke of Clarence
        Philippa Plantagenet, 5th Countess of Ulster (1355–82) m. Edmund Mortimer, 3rd Earl of March
        
        Roger Mortimer, 4th Earl of March, 6th Earl of Ulster (1374–98)
        Edmund Mortimer, 5th Earl of March, 7th Earl of Ulster (1391–1425)
        
        Anne Mortimer (1388–1411) m. Richard of Conisburgh, 3rd Earl of Cambridge
        Richard of York, 3rd Duke of York, 8th Earl of Ulster (1411–60)
        Edward IV (Edward, 4th Duke of York, 9th Earl of Ulster)
        House of York (Kings and Queens of England and Ireland)
        
        Edmond de Burgh
        Sir Richard Burke
        Walter Burke (d. 1432)
        Burkes of Castleconnell and Brittas (Clanwilliam)
        
        Uileag Carragh Burke
        Burkes of Cois tSiúire (Clanwilliam)
        
        Sir David Burke,
        Burkes of Muskerryquirk (Clanwilliam)
        
        Elizabeth, Queen of Scotland m. Robert I of Scotland
      - Theobald de Burgh
      - William de Burgh
      - Thomas de Burgh
      - Egidia de Burgh
    - William Óg de Burgh (d. 1270)
      - William Liath de Burgh (d. 1324)
        Sir Walter Liath de Burgh, d. 1332
        
        Sir Edmond Albanach de Burgh (d. 1375), 1st Mac William Íochtar (Lower Mac William), (Mayo)
        Mac William Íochtars, Viscounts Mayo and Earls of Mayo
        
        John de Burgh (1350–98), Chancellor of the University of Cambridge
        
        Richard an Fhorbhair de Burgh
        Sir Ulick de Burgh (d. 1343/53), 1st Mac William Uachtar (Upper Mac William) or Clanricarde (Galway)
        Richard Óg Burke (d. 1387)
        Ulick an Fhiona Burke
        Clanricardes, Earls of Marquesses of Clanricarde
        
        Raymond de Burgh
        
        Walter Óge de Burgh
        
        Raymund de Burgh
        
        Ulick de Burgh of Umhall
    - Alice de Burgh
    - Margery de Burgh
    - Matilda de Burgh
    - Daughter de Burgh
  - Hubert de Burgh, Bishop of Limerick (d. 1250)
  - William de Burgh, Sheriff of Connacht
- Hubert de Burgh, 1st Earl of Kent (d. 1243) m.
  - John de Burgh
  - Hubert de Burgh
  - Hubert de Burgh
    - Barons Burgh
- Geoffrey de Burgh, Bishop of Ely (d. 1228)
- Thomas de Burgh

Mac William Íochtar Genealogy

Sir Edmond Albanach de Burgh (d. 1375), 1st Mac William Íochtar (Lower Mac William), (Mayo)
- William de Burgh (d.1368)
- Thomas mac Edmond Albanach de Burca, 1375–1402, 2nd Mac William Íochtar
  - Walter mac Thomas de Burca (d.1440), 3rd Mac William Íochtar
    - Theobald Bourke (d.1503), 8th Mac William Íochtar
      - Meiler Bourke (d.1520), 11th Mac William Íochtar
    - Ricard Bourke (d.1509), 9th Mac William Íochtar
      - Seaán an Tearmainn Bourke (alive 1527), 13th Mac William Íochtar
        Ricard mac Seaán an Tearmainn Bourke (d.1571), 16th Mac William Íochtar
  - Edmund na Féasóige de Burca, (d.1458), 4th Mac William Íochtar
    - Ricard Ó Cuairsge Bourke (d.1473), 7th Mac William Íochtar
      - Edmond de Burca, 10th Mac William Íochtar
      - Walter de Burca
      - Seaán de Burca
        Oliver de Burca
        Seaán mac Oliver Bourke (d.1580), 17th Mac William Íochtar
        
        Richard Bourke (d.1586), 19th Mac William Íochtar
        Walter Ciotach de Burca of Belleek (d.1590)
        Tibbot (Theobald) MacWalter Kittagh Bourke, 21st Mac William Íochtar, 1st Marquess of Mayo
        Walter (Balthasar) Bourke, 2nd Marquess of Mayo
    - Thomas Ruadh de Burca
    - Uilleag de Burca
      - Edmond de Burca (d.1527), 12th Mac William Íochtar
        David de Burca (alive 1537), 15th Mac William Íochtar
        Richard the Iron Bourke (d.1583), 18th Mac William Íochtar
        Tibbot (Theobald) ne Long Bourke (1567-1629), 23rd Mac William Íochtar, 1st Viscount Mayo (1627)
        Viscounts Mayo
        
        William "the Blind Abbot" Bourke (d.1593), 20th Mac William Íochtar
      - Theobald mac Uilleag Bourke (d.1537), 14th Mac William Íochtar
      - Risdeárd de Burca
        Ricard Deamhan an Chorráin de Burca
        Risdeárd Mac Deamhan an Chorráin (Richard) "the Devils Hook" Bourke (d.1601), 22nd Mac William Íochtar
  - Seaán de Burca (d.1456)
  - Tomás Óg de Burca, (d.1460), 5th Mac William Íochtar
  - Risdeárd de Burca (d.1473), 6th Mac William Íochtar

References

Citations

^ ^a ^b Moody, T. W.; Martin, F. X.; Byrne, F. J., eds. (1989). A New History of Ireland: IX: Maps, Genealogies, Lists, A Companion to Irish History, Part II. Oxford: Oxford University Press. pp. 235–36 (Lower Mac William and Viscounts of Mayo, 1332-1649).
^ Chambers, A. (2007). Shadow Lord: Theobald Bourke, Tibbott-Ne-Long, 1567–1629: Son of the pirate queen Grace O'Malley. Dublin: Ashfield Press. pp. 65–66.

Bibliography

Chambers, Anne (2007). Shadow Lord: Theobald Bourke, Tibbott-Ne-Long, 1567–1629: Son of the pirate queen Grace O'Malley. Dublin: Ashfield Press. ISBN 978-1-90-165865-1.
Knox, Hubert T. (1908). The history of the county of Mayo to the close of the sixteenth century. Dublin: Hodges, Figgis and Company. p. 395.
Moody, T. W.; Martin, F. X.; Byrne, F. J., eds. (1989). A New History of Ireland: IX: Maps, Genealogies, Lists, A Companion to Irish History, Part II. Oxford: Oxford University Press. ISBN 978-0-19-959306-4.