One written record of the family starts with Stephen Perrot of Poptown in Pembroke, who died in 1338.
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.
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.
(The existence of a third daughter Dorothy, said to have married a cousin, James Perrott, Lord of Wellington, is purely fictitious.
This family suffered greatly for being cavaliers during the civil war, their estates ravaged.