Viscount Windsor is a title that has been created twice. The first creation came in the Peerage of Ireland

Peerage of Ireland

The Peerage of Ireland is the term used for those titles of nobility created by the English and later British monarchs of Ireland in their capacity as Lord or King of Ireland. The creation of such titles came to an end in the 19th century. The ranks of the Irish peerage are Duke, Marquess, Earl,...

 in 1699 when the Hon. Thomas Windsor was made Viscount Windsor, of Blackcastle. He was the younger son of Thomas Hickman-Windsor, 1st Earl of Plymouth

Thomas Hickman-Windsor, 1st Earl of Plymouth

Thomas Hickman-Windsor, 1st Earl of Plymouth, PC succeeded to his family's estate around Hewell Grange near Redditch in 1645, the same year he distinguished himself in the Battle of Naseby...

, and notably represented Droitwich

Droitwich (UK Parliament constituency)

Droitwich was the name of a constituency of the House of Commons of England in 1295, and again from 1554, then of the House of Commons of Great Britain from 1707 to 1800 and of the House of Commons of the Parliament of the United Kingdom from 1801 to 1918...

, Bramber

Bramber (UK Parliament constituency)

Bramber was a parliamentary borough in Sussex, one of the most notorious of all the rotten boroughs. It elected two Members of Parliament to the House of Commons in 1295, and again from 1472 until 1832, when the constituency was abolished by the Great Reform Act.-History:The borough consisted of...

 and Monmouthshire

Monmouthshire (UK Parliament constituency)

Monmouthshire was a county constituency of the House of Commons of Parliament of England from 1536 until 1707, of the Parliament of Great Britain from 1707 to 1801, and of the Parliament of the United Kingdom from 1801 to 1885...

 in the House of Commons

British House of Commons

The House of Commons is the lower house of the Parliament of the United Kingdom, which also comprises the Sovereign and the House of Lords . Both Commons and Lords meet in the Palace of Westminster. The Commons is a democratically elected body, consisting of 650 members , who are known as Members...

. In 1712 he was created Baron Mountjoy in the Peerage of Great Britain

Peerage of Great Britain

The Peerage of Great Britain comprises all extant peerages created in the Kingdom of Great Britain after the Act of Union 1707 but before the Act of Union 1800...

. He was succeeded by his son, the second Viscount. He sat as briefly Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Cardiff

Cardiff (UK Parliament constituency)

Cardiff was a parliamentary constituency centred on the town of Cardiff in South Wales which returned one Member of Parliament to the House of Commons from 1542 until it was abolished for the 1918 general election.- MPs 1542-1645 :- MPs 1645–1832 :...

. On his death in 1758 the titles became extinct. His daughter the Hon. Charlotte Jane Windsor married John Stuart, 4th Earl of Bute

John Stuart, 1st Marquess of Bute

John Stuart, 1st Marquess of Bute, PC, FRS was a British nobleman.He was the son of the 3rd Earl of Bute and the former Mary Wortley Montagu, a granddaughter of the 1st Duke of Kingston-upon-Hull and great-granddaughter of the 1st Earl of Sandwich...

. In 1796 he was created Viscount Mountjoy, Earl of Windsor and Marquess of Bute

Marquess of Bute

Marquess of the County of Bute, shortened in general usage to Marquess of Bute, is a title in the Peerage of Great Britain. It was created in 1796 for John Stuart, 4th Earl of Bute.-Family history:...

.

The second creation came in the Peerage of the United Kingdom

Peerage of the United Kingdom

The Peerage of the United Kingdom comprises most peerages created in the United Kingdom of Great Britain and Ireland after the Act of Union in 1801, when it replaced the Peerage of Great Britain...

 in 1905 when Robert Windsor-Clive, 14th Baron Windsor

Robert Windsor-Clive, 1st Earl of Plymouth

Robert George Windsor-Clive, 1st Earl of Plymouth GBE, CB, PC , known as The Lord Windsor between 1869 and 1905, was a British nobleman and Conservative politician.-Background:...

, was made Viscount Windsor, of St Fagans in the County of Glamorgan. He was made Earl of Plymouth

Earl of Plymouth

Earl of Plymouth is a title that has been created three times, twice in the Peerage of England and once in the Peerage of the United Kingdom. The first creation was in 1675 for Charles FitzCharles, illegitimate son of King Charles II by his mistress Catherine Pegge...

 at the same time. For more information on this creation of the viscountcy, see the latter title.

Viscounts Windsor (1699; First creation)

• Thomas Windsor, 1st Viscount Windsor (1669–1738)
• Herbert Windsor, 2nd Viscount Windsor (1707–1758)