Sir Arthur Onslow, 1st Baronet (23 April 1622 – 21 July 1688) was an English

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 politician

The eldest son of Sir Richard Onslow

Richard Onslow (Parliamentarian)

Sir Richard Onslow was an English Member of Parliament and fought on the Parliamentary side during the English Civil War. He was the grandson of one Speaker of the House of Commons and the grandfather of another, both also called Richard Onslow.Onslow was knighted on 2 June 1624...

, an important Parliamentarian from Surrey

Surrey

Surrey is a county in the South East of England and is one of the Home Counties. The county borders Greater London, Kent, East Sussex, West Sussex, Hampshire and Berkshire. The historic county town is Guildford. Surrey County Council sits at Kingston upon Thames, although this has been part of...

, Arthur also took an active role in political affairs during the English Civil War

English Civil War

The English Civil War was a series of armed conflicts and political machinations between Parliamentarians and Royalists...

. He represented 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...

 in the Long Parliament

Long Parliament

The Long Parliament was made on 3 November 1640, following the Bishops' Wars. It received its name from the fact that through an Act of Parliament, it could only be dissolved with the agreement of the members, and those members did not agree to its dissolution until after the English Civil War and...

, and Surrey

Surrey (UK Parliament constituency)

Surrey was a constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by two Members of Parliament until 1832....

 in the First

First Protectorate Parliament

The First Protectorate Parliament was summoned by the Lord Protector Oliver Cromwell under the terms of the Instrument of Government. It sat for one term from 3 September 1654 until 22 January 1655 with William Lenthall as the Speaker of the House....

, Second

Second Protectorate Parliament

The Second Protectorate Parliament in England sat for two sessions from 17 September 1656 until 4 February 1658, with Thomas Widdrington as the Speaker of the House of Commons...

, and Third Protectorate Parliament

Third Protectorate Parliament

The Third Protectorate Parliament sat for one session, from 27 January 1659 until 22 April 1659, with Chaloner Chute and Thomas Bampfylde as the Speakers of the House of Commons...

s. After the English Restoration

English Restoration

The Restoration of the English monarchy began in 1660 when the English, Scottish and Irish monarchies were all restored under Charles II after the Interregnum that followed the Wars of the Three Kingdoms...

, he was 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 Guildford

Guildford (UK Parliament constituency)

Guildford is a county constituency in Surrey which returns one Member of Parliament to the House of Commons of the Parliament of the United Kingdom, elected by the first-past-the-post voting system....

 until 1679, and then represented Surrey again in the remaining Parliaments of Charles II

Charles II of England

Charles II was monarch of the three kingdoms of England, Scotland, and Ireland.Charles II's father, King Charles I, was executed at Whitehall on 30 January 1649, at the climax of the English Civil War...

.

Onslow's first wife was Rose Stoughton (d. 1647), daughter of Nicholas Stoughton, by whom he had no children. His second wife was Mary Foote, daughter of Thomas Foote

Thomas Foote

Sir Thomas Foote, 1st Baronet was a wealthy grocer of London.In 1646 he was made a Sheriff of London and in 1649 elected Lord Mayor of London. He represented London in the First and Second Protectorate Parliaments....

, a wealthy London grocer created a baronet in 1660. By her he had several children, including:

• Richard Onslow, 1st Baron Onslow
  Richard Onslow, 1st Baron Onslow
  Richard Onslow, 1st Baron Onslow PC was a British Whig Member of Parliament, known as Sir Richard Onslow, 2nd Baronet from 1688 until 1716. He served as the Speaker of the House of Commons from 1708 until 1710 and as Chancellor of the Exchequer from 1714 until 1715...
  
   (1654–1717), Speaker of the House of Commons
• Foot Onslow (1655–1710), Commissioner of Excise
• Catherine Onslow (d. 14 March 1731), married Sir William Clerke, 3rd Baronet

On 8 May 1674, Onslow obtained a patent in reversion to succeed to his father-in-law Thomas Foote's baronetcy upon his death without heirs, with the precedence of the original creation. He became, therefore, a baronet upon Foote's death in 1687, but died less than a year later, and was succeeded by his eldest son Richard.