Baronetcies have been granted to the Perrott family. One was created on 28 June 1611 in the Baronetage of England, but the first holder died before his Letters Patent were sealed, so it has been deemed not to be created. The first complete creation was on 1 July 1716 in the Baronetage of Great Britain and the second on 21 June 1911, in the Baronetage of the United Kingdom.
According to lore, the ancient family of Perrot are said to have derived their surname from Castle Perrott in Brittany, built in 957 AD by a William de Perrott. His great-grandson, Sir Richard, Seigneur de Perrott in 1066 furnished William the Conqueror with his quota of ships and men and accompanied the expedition to England and subsequently settled in Somerset, where the river Perrott rises before it runs into the Severn. Sir Richard left issue by his wife, daughter of King Sancho of Aragon, a son and heir, Stephen, who was granted lands by King Henry I of England in Pembrokeshire. He is said to have married Helen (or Eleanor), lady of Yestington, fourth in descent from Hywel Dda, Welsh king of South Wales. Stephen Perrott erected Narberth castle in or about 1112. He left numerous issue. Overall, this account is highly fictionalized, and the written record only starts with Stephen Perrot of Poptown in Pembroke, who died in 1338.
A descendant, Sir John Perrot, KB, Lord of Haroldston and of Langhorn, which castle he built, was also Lord of Carew and its castle, in Pembrokeshire, to which he added substantially. He was Lord Deputy of the Province, Lieutenant-General and sometime Governor of Ireland under Elizabeth I, Admiral of England, Privy Councillor, and possessed estates said to be worth an annual revenue of £22,000 per annum. He married twice. By his first wife he had a son, Sir Thomas Perrott, 1st Baronet of Haroldston, created 28 June 1611, who died before his Letters Patent was even issued, having married in 1583 Lady Dorothy, sister of Robert Devereux, 2nd Earl of Essex.
Sir Thomas had two daughters: Elizabeth, who married John Pryse of Gogerthan; and Penelope, who first married famed astronomer Sir William Lower in 1601, and second, Sir Robert Naunton, one of the biographers of Sir John, and Secretary of State to James I of England. (The existence of a third daughter Dorothy, said to have married a cousin, James Perrott, Lord of Wellington, is purely fictitious.) Sir John's son by his mistress, Sybill Jones, was Sir James Perrot, Knt., Privy Councillor, who was created Marquess of Narberth, Earl and Viscount Carew, and Baron Perrott. This family suffered greatly for being cavaliers during the civil war, their estates ravaged.
Perrott baronets of Plumstead, Kent (1716)
- Sir James Perrott, 1st Baronet, also listed as Sir Robert Perrott (died 1731)
- Sir Richard Perrott, 2nd Baronet (c. 1716–1796)
- Sir Edward Bindloss Perrott, 3rd Baronet (1 September 1784 – 24 March 1859)
- Sir Edward George Lambert Perrott, 4th Baronet (10 May 1811 – 4 June 1886)
- Sir Herbert Charles Perrott, 5th Baronet (26 October 1849 – 15 Feb 1922) (extinct on his death)
Perrott baronets of Plumstead, Kent (1911)
- Sir Herbert Charles Perrott, 1st Baronet (26 October 1849 – 15 February 1922) CH 1918 (extinct on his death)
- Burke, John, A Genealogical and Heraldic History of the Commoners of Great Britain and Ireland, London, 1835, vol.II, p.587. and vol. IV (1838) p.651n – 652n
- Old Pembroke Families in the Ancient County Palatine of Pembroke. Henry Owen. (London: Chas. J. Clark, 1902)
- Perrot notes, or some account of the various branches of the Perrott family, Edward Lowry Barnwell, (London: J. Russell Smith, 1867)
- A Critical Edition of Sir James Perrot's The Life, Deedes and Death of Sir John Perrott, Knight by Roger Turvey (2002)
- Burke's Commoners (1835) vol. II, p.314, and vol.IV (1838) p.651n-652n