History thumb|left|Hatfield House Old Palace An earlier building on the site was the Royal Palace of Hatfield. Only part of this still exists a short distance from the present house. That palace was the childhood home and favourite residence of Queen Elizabeth I. Built in 1497 by the Archbishop of Canterbury (formerly Bishop of Ely), King Henry VII's minister, John Cardinal Morton, it comprised four wings in a square surrounding a central courtyard. The palace was seized by Henry VIII with other church properties. The nearby parish church of St Etheldreda's in Old Hatfield once served the bishop's palace as well as the village. Henry VIII's children, King Edward VI and the future Queen Elizabeth I, spent their youth at Hatfield Palace. His eldest daughter, who later reigned as Queen Mary I, lived there between 1533 and 1536, when she was sent to wait on the then Princess Elizabeth as punishment for refusing to recognise Henry's marriage to Anne Boleyn and his religious reforms. In 1548, when she was only 15 years old, Elizabeth was under suspicion of having illegally agreed to marry Thomas Seymour. The house and her servants were seized by Edward VI's agent, Robert Tyrwhit, and she was interrogated there. She successfully defended her conduct with wit and defiance. Seymour was executed in 1549 for numerous other crimes against the crown. After her two months of imprisonment in the Tower of London by her sister, Queen Mary, Elizabeth returned to Hatfield. The Queen Elizabeth Oak on the grounds of the estate is said to be the location where Elizabeth was told she was queen following Mary's death, but is considered unlikely as Mary died in November. In November 1558, Elizabeth held her first Council of State in the Great Hall.
History thumb|left|Hatfield House Old Palace An earlier building on the site was the Royal Palace of Hatfield. Only part of this still exists a short distance from the present house. That palace was the childhood home and favourite residence of Queen Elizabeth I. Bu!ilt in 1497 by the Archbishop of Canterbury (formerly Bishop of Ely), King Henry VII's minister, John Cardinal Morton, it comprised four wings in a square surrounding a central courtyard. The palace was seized by Henry VIII with other church properties. The nearby parish church of St Etheldreda's in Old Hatfield once served the bishop's palace as well as the village. Henry VIII's children, King Edward VI and the future Queen Elizabeth I, spent their youth at Hatfield Palace. His eldest daughter, who later reigned as Queen Mary I, lived there between 1533 and 1536, when she was sent to wait on the then Princess Elizabeth as punishment for refusing to recognise Henry's marriage to Anne Boleyn and his religious reforms. In 1548, when she was only 15 years old, Elizabeth was under suspicion of having illegally agreed to marry Thomas Seymour. The house and her servants were seized by Edward VI's agent, Robert Tyrwhit, and she was interrogated there. She successfully defended her conduct with wit and defiance. Seymour was executed in 1549 for numerous other crimes against the crown. After her two months of imprisonment in the Tower of London by her sister, Queen Mary, Elizabeth returned to Hatfield. The Queen Elizabeth Oak on the grounds of the estate is said to be the location where Elizabeth was told she was queen following Mary's death, but is considered unlikely as Mary died in November. In November 1558, Elizabeth held her first Council of State in the Great Hall.