Henry VIII was King of England from 21 April 1509 until his death. He was the first ever English King of Ireland, and continued the nominal claim by English monarchs to the Kingdom of France. Henry was the second Tudor monarch, succeeding his father, Henry VII.
Henry is known for his consequential role in the separation of the Church of England from the Roman Catholic Church, besides his six marriages and many extramarital affairs, as well as his effort to obtain an annulment of his marriage to Catherine of Aragon, which led to conflict with the Pope. His disagreements with the Pope led Henry to separate the Church of England from papal authority, with himself as king and as the Supreme Head of the Church of England; the disputes also led to the Dissolution of the Monasteries. His principal dispute was with papal authority rather than with doctrinal matters, and he remained a believer in core Catholic theological teachings despite his excommunication from the Roman Catholic Church. Henry oversaw the legal union of England and Wales with the Laws in Wales Acts 1535 and 1542. He is also well known for a long personal rivalry with both Francis I of France and the Holy Roman Emperor Charles V, with whom he frequently warred.
Domestically, Henry is known for his radical changes to the English Constitution, ushering in the theory of the divine right of kings to England. Besides asserting the sovereign's supremacy over the Church of England, thus initiating the English Reformation, he greatly expanded royal power. Charges of treason and heresy were commonly used to quash dissent, and those accused were often executed without a formal trial, by means of bills of attainder. He achieved many of his political aims through the work of his chief ministers, some of whom were banished or executed when they fell out of his favour. People such as Thomas Wolsey, Thomas More, Thomas Cromwell, Richard Rich, and Thomas Cranmer figured prominently in Henry's administration. He was an extravagant spender and used the proceeds from the Dissolution of the Monasteries and acts of the Reformation Parliament to convert money into royal revenue that was formerly paid to Rome. Despite the influx of money from these sources, Henry was continually on the verge of financial ruin due to his personal extravagance as well as his numerous costly continental wars.
His contemporaries considered Henry in his prime to be an attractive, educated, and accomplished king, and he has been described as "one of the most charismatic rulers to sit on the English throne". Besides ruling with considerable power, he was also an author and composer. His desire to provide England with a male heir stemmed partly from personal vanity and partly from his belief that a daughter would be unable to consolidate Tudor power and maintain the fragile peace that existed following the Wars of the Roses.
This led to the two things for which Henry is most remembered: his six marriages and his break with the pope (who would not allow an annulment of Henry's first marriage). As he aged, Henry became severely obese and his health suffered, contributing to his death in 1547. He is frequently characterised in his later life as a lustful, egotistical, harsh, and insecure king.
He was succeeded by his son Edward VI.
The Royal styles King Henry VIII used were:
1509 - 1521 "Rex Angliae et Franciae et Dominus Hiberniae" (King of England and of France and Lord of Ireland).
In 1521 English replaced Latin as the official language of the regnal style.
1521 - 1535 By the Grace of God, King of England and France, Defender of the Faith and Lord of Ireland.