The Baronetcy of Mainwaring of Over-Peover has twice been created for members of the ancient family of Mainwaring of Over-Peover, Cheshire.

It was created on 22 November 1660 by 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...

 on his 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...

, for Thomas Mainwaring, High Sheriff of Cheshire

High Sheriff of Cheshire

The High Sheriff is the oldest secular office under the Crown. Formerly the High Sheriff was the principal law enforcement officer in the county but over the centuries most of the responsibilities associated with the post have been transferred elsewhere or are now defunct, so that its functions...

 in 1657 and Knight of the Shire otherwise 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 Cheshire

Cheshire (UK Parliament constituency)

Cheshire is a former United Kingdom Parliamentiary constituency for the county of Cheshire. It 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.As a county...

 in 1660.

The Baronetcy was extinct on the death of the 4th Baronet. However his widow remarried and her son by the second marriage Thomas Weterall eventually inherited the Mainwaring Cheshire estate and changed his surname to Mainwaring. .

The Baronetcy was recreated in the Baronetage of the United Kingdom on 26 May 1804 for Henry Mainwaring, son of Thomas Weterall Mainwaring. It was extinct on the death of the 5th Baronet in 1934.

Mainwaring of Over-Peover (1660)

• Sir Thomas Mainwaring, 1st Baronet
  Sir Thomas Mainwaring, 1st Baronet
  Sir Thomas Mainwaring, 1st Baronet was an English politician who sat in the House of Commons in 1660.Mainwaring was the son of Philip Mainwaring of Peover Hall and his wife Ellen Minshull, daughter of Edward Minshull of Stoke. In 1654 his mother had the Peover Hall Stable Block built for him...
  
    (1623-1689) Member of Parliament for Cheshire 1660
• Sir John Mainwaring, 2nd Baronet
  Sir John Mainwaring, 2nd Baronet
  Sir John Mainwaring, 2nd Baronet was an English politician who sat in the House of Commons from 1689 to 1702.Mainwaring was the son of Sir Thomas Mainwaring, 1st Baronet of Peover Hall and his wife Mary Delves, daughter of Sir Henry Delves, 2nd Baronet, of Dodington.Mainwaring succeeded to the...
  
  (1656-1702). Member of Parliament for Cheshire 1689-1702.
• Sir Thomas Mainwaring, 3rd Baronet (1681-1726)
• Sir Henry Mainwaring, 4th Baronet (1726-1797). Extinct on his death

Mainwaring of Over-Peover (1804)

• Sir Henry Mainwaring, 1st Baronet (1782-1860)
• Sir Harry Mainwaring, 2nd Baronet (1804-1875)
• Sir Stapleton Thomas Mainwaring, 3rd Baronet (1837-1878)
• Sir Phillip Tatton Mainwaring, 4th Baronet (1838-1906)
• Sir Henry Stapleton Mainwaring, 5th Baronet (1878-1934).Extinct on his death