Question: What is the Ulster-Scots name for the island where Thomas de Thelwall held office as Master of the Rolls and clerk to the Privy Council?

Context articles: Queen's Privy Council for Canada
Clerk of the Privy Council (Canada)
Privy Council Office (Canada)
President of the Queen's Privy Council for Canada
Michael Wernick
Privy Council of Thailand
Ireland
Lord High Chancellor of Sweden
Thomas de Thelwall
Privy Council Office (United Kingdom)

The Queen's Privy Council for Canada (QPC) (French: "Conseil privé de la Reine pour le Canada" (CPR)), sometimes called "Her Majesty's Privy Council for Canada" or simply the Privy Council, is the full group of personal consultants to the monarch of Canada on state and constitutional affairs.
 Responsible government, though, requires the sovereign or her viceroy, the Governor General of Canada, to almost always follow only that advice tendered by the Cabinet: a committee within the Privy Council composed usually of elected Members of Parliament.
 Those summoned to the QPC are appointed for life by the governor general as directed by the Prime Minister of Canada, meaning that the group is composed predominantly of former cabinet ministers, with some others having been inducted as an honorary gesture.
 Those in the council are accorded the use of an honorific style and post-nominal letters, as well as various signifiers of precedence.
The Clerk of the Privy Council (French: "Greffier du Conseil privé" ) is the senior civil servant in the Canadian government.
 The Title and Office is in fact "Clerk of the Privy Council and the Secretary to the Cabinet".
 The Clerk is appointed by the Queen's representative in Canada, the Governor General, on the advice of the Prime Minister.
The Privy Council Office (French: "Bureau du Conseil privé" ) is the secretariat of the federal cabinet of Canada, which is a committee of the Queen's Privy Council for Canada, and provides non-partisan advice and support to the Canadian ministry, as well as leadership, coordination, and support to the departments and agencies of government.
 It is located in the Office of the Prime Minister and Privy Council (previously known as Langevin Block) on Parliament Hill.
 The Federal Government helps the Privy Council by constituting the premier levels of government in Canada.
In the Canadian cabinet, the President of The Queen's Privy Council for Canada (French: "President du Conseil privé de la Reine pour le Canada" ) is nominally in charge of the Privy Council Office.
 The President of the Privy Council also has the largely ceremonial duty of presiding over meetings of the Queen's Privy Council for Canada, a body which only convenes in full for affairs of state such as the accession of a new Sovereign or the marriage of the Prince of Wales or heir presumptive to the Throne (see Monarchy in Canada).
 Accordingly, the last time the President of the Privy Council had to preside over a meeting of the Privy Council was in 1981 on the occasion of Charles, Prince of Wales' engagement to Lady Diana Spencer.
 It is the equivalent of the office of Lord President of the Council in the United Kingdom.
Michael Wernick (born September 1957) is a Canadian public servant and currently the Clerk of the Privy Council of Canada.
 Wernick was previously the deputy minister for the Department of Indian Affairs and Northern Development from May 2006 to July 11, 2014.
 Before being the clerk for the Privy Council office, Wernick was the deputy clerk under predecessor Janice Charette.
 He has held several other positions in the Privy Council office and as Associate Deputy Minister for the Department of Canadian Heritage.
The Privy Council of Thailand (Thai: คณะองคมนตรีไทย , "khana ongkhamontri thai") is a body of appointed advisors to the Monarch of Thailand.
 The council, as the Constitution of Thailand stipulates, must be composed of no more than eighteen members.
 The council is led by the president of the Privy Council of Thailand; currently former Prime Minister, "national statesman", and Army General Prem Tinsulanonda.
 The king alone appoints all members of the council.
 The council's offices are in the Privy Council Chambers, Phra Nakhon District, Bangkok.
Ireland ( ; Irish: "Éire" ] ; Ulster-Scots: "Airlann" ] ) is an island in the North Atlantic.
 It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel.
 Ireland is the second-largest island of the British Isles, the third-largest in Europe, and the twentieth-largest on Earth.
The Lord High Chancellor (Swedish: "Rikskansler" ), literally "Chancellor of the Realm", was a prominent and influential office in Sweden, from 1538 until 1799, excluding periods when the office was out of use.
 The office holder was a member of the Privy Council.
 From 1634, the Lord High Chancellor was one of five Great Officers of the Realm, who were the most prominent members of the Privy Council and headed a governmental branch each—the Lord High Chancellor headed the Privy Council.
 In 1792, more than a century after the office's abolishment in 1680, it was revived but was then finally abolished seven years later in 1799.
Thomas de Thelwall (died 1382) was an English judge and Crown official who spent part of his career in Ireland, where he held office as Master of the Rolls in Ireland and clerk to the Privy Council of Ireland.
 He was Chancellor of the Duchy of Lancaster 1377-78.
The Privy Council Office (PCO) provides secretariat and administrative support to the Lord President of the Council in his or her capacity of president of Her Majesty's Most Honourable Privy Council.
 The head of the office is the Clerk of the Privy Council.
 The PCO is an independent unit based in the Cabinet Office.