TheMyddelton family were substantial landowners and benefactors in and aroundDenbigh in thenorth-east ofWales. As landowners and members of parliament, a number of its members were elevated to the baronetcy. For several generations, the family were governors ofDenbigh Castle and ownedChirk Castle well into the 20th century.

Richard Myddelton (by 1509–1577/78), the firstMP forDenbigh Boroughs, was a son of Fulk Myddelton ofLlansannan, himself a younger son of David Myddelton, receiver ofDenbigh during the reign of KingEdward IV, was for many years governor ofDenbigh Castle. His younger brother wasRobert Myddelton, also an MP for Denbigh Boroughs.^[1]

The Myddelton Family coat of arms features their motto, "In veritate triumpho" (I triumph in trouth), and can be found over the entrance toChirk Castle inNorth Wales, which had been bought bySir Thomas Myddelton in 1595 for £5,000. After 400 years of family ownership, the Castle was transferred to theNational Trust in 1981, although family members lived at the Castle until 2004.^[2]

• Richard Myddelton (by 1509–1577/78), Governor of Denbigh and MP for Denbigh Boroughs.
• Robert Myddelton (by 1526–1566/67), MP for Denbigh Boroughs.
• Sir Thomas Myddelton (1550–1631), Lord Mayor of London.
• Sir Hugh Myddelton, 1st Baronet (1560–1631), clothmaker, mine-owner, goldsmith, and for Denbigh Boroughs.
• Robert Myddelton (c. 1563–1616), MP for Weymouth and Melcombe Regis and the City of London.
• Thomas Myddelton (1586–1666), MP for Denbighshire and Weymouth.
• Peter Middleton (1603–1661), MP for Weymouth.
• Sir Thomas Myddelton, 1st Baronet (1624–1663), MP
• Sir Thomas Myddelton, 2nd Baronet (1651–1684), MP
• Sir Richard Myddelton, 3rd Baronet (1655–1716), MP
• Robert Myddelton (1678–1733), MP for Denbigh Boroughs
• John Myddelton (1685–1747), MP for Denbigh Boroughs and Denbighshire
• Richard Myddelton (1726–1795), MP for Denbigh Boroughs
• Robert Myddelton Biddulph (1761–1814), MP for Denbigh Boroughs and Herefordshire
• Richard Myddelton (1764–1796), MP for Denbigh Boroughs
• Robert Myddelton Biddulph (1805–1872), MP for Denbigh Boroughs and Denbighshire
• Thomas Myddelton Biddulph (1809–1878), officer in the British Army and courtier
• Ririd Myddelton (1902–1988), country gentleman and one-time member of the Royal Household of the Sovereign of the United Kingdom

• 
  Sir Thomas Myddelton, MP for Denbighshire and Weymouth.
• 
  Sir Hugh Myddelton, 1st Baronet
• 
  Mary (néeCholmondeley) Myddelton, first wife ofSir Thomas Myddelton, 1st Baronet
• 
  Sir Thomas Myddelton, 2nd Baronet
• 
  Richard Myddelton, MP for Denbigh Boroughs
• 
  Col. Robert Myddleton Biddulph, MP for Denbigh Boroughs and Denbighshire
• 
  Lt.-Gen. Sir Thomas Myddelton Biddulph

• Myddelton College
• Myddelton baronets, of Chirke in the County of Denbigh (1660)
• Middleton baronets, of Ruthin, Denbighshire (1622)
• Saltonstall family

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• Myddelton family
• Welsh families

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