Catholic. 1557 Queen Mary restored the Earldom of Northumberland to the Percies after a gap of 20 years. So in 1557 - 1572 Thomas became the 7th Earl of Northumberland. 1568 took part in the Rising of the North against Queen Elizabeth I. 1572 at York beheaded for treason. Later beatified as a martyr by the Roman Catholic Church. Succeeded by his brother Henry.