William de Mar, 5th Earl of Mar

Uilleam of Mar, or Uilleam mac Dhonnchaidh (Anglicized: William, Duncan's son), was perhaps the greatest of the mormaers of Mar ruling from 1244 to 1276, also known as Earl of Mar. Uilleam died in 1276, and was succeeded by his son Domhnall.

family

From https://en.wikipedia.org/wiki/Uilleam,_Earl_of_Mar

By 1244, Uilleam had married into the Comyn house, the fastest rising French family in the Scottish kingdom. He married Elisabeth Comyn, the daughter of William Comyn, jure uxoris Earl of Buchan.

When his wife Isabel (also called Elizabeth, daughter of Sir William Comyn and Marjory Colham) died in 1267, Uilleam married Muriel, the daughter of Maol Íosa II, Mormaer of Strathearn.

William, 5th Earl of Mar; Chamberlain to Alexander III King of Scots c1252; intermittently member of Council of Regency of Scotland in the 1250's and 1260's; also Chamberlain 1262-64 and Sheriff of Dunbartonshire 1264-66. [Burke's Peerage
biography

Uilleam, Earl of Mar

From Wikipedia, the free encyclopedia

Uilleam of Mar - Uilleam mac Dhonnchaidh (William, Duncan's son) - was perhaps the greatest of the Mar mormaers, ruling Mar from 1244 to 1276.

Uilleam was responsible for the construction of Kildrummy Castle, the greatest castle to have been built in 13th century northern Scotland. It is one of the few examples where a native Scottish magnate built a large-scale fortification, something normally practiced by the incoming French.

Uilleam, more than any of his predecessors, participated in Scottish and even British-wide politics, becoming a leading figure in the royal regime of Alexander II, and the minority of Alexander III. By 1244, Uilleam had married into the Comyn house, the fastest rising foreign family in the Scottish kingdom. He married Isabel, the daughter of Count William Comyn of Buchan. The Comyn-Mar alliance helped fight off the ambitions of the Durwards, who were then in prime favor with the king.

Alan Durward used his descent from a daughter of Gille Críst to contest Uilleam's right to the Mormaerdom, but Uilleam successfully held off these claims. Uilleam and the Comyn Count of Menteith then launched accusations of treason towards Alan while at the court of Henry III of England at York.

Uilleam engaged in supplementing his power on a nation-wide basis. He held the post of Sheriff of Dumbarton between 1264 and 1266, a post which opened up connections in the western Highlands. Uilleam was able to marry his younger son Donnchadh to Christina MacRuaridh, the heiress of the Hebridean chief Alan MacRuadridh, the principle Hebridean supporter of the Scottish cause against Norway.

When his wife Isabel died in 1267, Uilleam married Muriel, the daughter of Maol Íosa II, Mormaer of Strathearn.

Uilleam died in 1276, and was succeeded by his son Domhnall.

[edit]Bibliography

Oram, Richard D., "The Earls and Earldom of Mar, c1150-1300," Steve Boardman and Alasdair Ross (eds.) The Exercise of Power in Medieval Scotland, c.1200-1500, (Dublin/Portland, 2003).

Name: William Mar

Suffix: Earl

Sex: M

Note: William Mar was the 5th Earl of Mar. In 1258 he was one of the Regents of Scotland, and was made Great Chamberlain of Scotland in 1264.

Birth: BEF 1245

Death: 1281

Father: Duncan Mar b: BEF 1170

Mother: Unknown

Marriage 1 Elizabeth Cumyn b: BEF 124

Donald Mar b: BEF 1260

Marriage 2 Muriel b: in Strathearn

William, 5th Earl of Mar

• from the peerage.com Last Edited=28 Dec 2011
• died from 16 May 1291 to 12 November 1291
• son of Duncan, 4th Earl of Mar.1

He succeeded to the title of 5th Earl of Mar [S., c. 1115] before 7 February 1243/44.1 He was Chamberlain to King Alexander III of the Scots circa 1252.1 He was member of the Council of Regency of Scotland circa 1255.1 He held the office of Chamberlain of Scotalnd between 1262 and 1264.1 He held the office of Sheriff of Dunbartonshire between 1264 and 1266.1

Married

1. firstly, Elizabeth Comyn, daughter of William Comyn, Earl of Buchan and Margaret, Countess of Buchan.2
2. secondly, Muriel of Strathearn, daughter of Malise, 5th Earl of Strathearn.2

Child of William, 5th Earl of Mar and Elizabeth Comyn

1. Donald, 6th Earl of Mar+1 d. a 25 Jul 1297 Citations

• [S37] BP2003 volume 2, page 2603. See link for full details for this source. Hereinafter cited as. [S37]
• [S323] Sir James Balfour Paul, The Scots Peerage: founded on Wood's edition of Sir Robert Douglas's The Peerage of Scotland (Edinburgh, Scotland: David Douglas, 1904), volume V, page 576. Hereinafter cited as The Scots Peerage.
• [S323] Sir James Balfour Paul, The Scots Peerage, volume V, page 577.