Acts of Supremacy
The first Act of Supremacy was a piece of legislation that granted King Henry VIII of England Royal Supremacy, which means that he was declared the supreme head of the Church of England. It is still the legal authority of the Sovereign of the United Kingdom. Royal Supremacy is specifically used to describe the legal sovereignty of the civil laws over the laws of the Church in England.
First Act of Supremacy 1534 
The Act of Supremacy of November 1534 (26 Hen. VIII c. 1) was an Act of the Parliament of England under King Henry VIII declaring that he was "the only supreme head on earth of the Church in England" and that the English crown shall enjoy "all honours, dignities, preeminences, jurisdictions, privileges, authorities, immunities, profits, and commodities to the said dignity." The wording of the Act made clear that Parliament was not granting the King the title (thereby suggesting that they had the right to withdraw it later), but that it was a recognized fact. In the Act of Supremacy, Henry abandoned Rome completely. He thereby asserted the independence of the Ecclesia Anglicana. He appointed himself and his successors as the supreme rulers of the English church. Henry had been declared "Defender of the Faith" (Fidei Defensor) in 1521 by Pope Leo X for his pamphlet accusing Martin Luther of heresy. Parliament later conferred this title upon Henry in 1544.
The 1534 Act is often taken to mark the beginning of the English Reformation, although other sources suggest that it had been brewing for more than a century. There were a number of reasons for this Act, primarily the need for Henry to obtain an annulment of his marriage to Catherine of Aragon, because Catherine had not produced a son and heir (and because of Henry's alleged misgivings about the legitimacy of his marriage to his late brother's wife). Pope Clement VII still refused to grant the annulment, due to the familial connections Catherine had with the Holy Roman Emperor at the time (and fear caused by Charles V's sacking of Rome in 1527). The Treasons Act was later passed: it provided that to disavow the Act of Supremacy and to deprive the King of his "dignity, title, or name" was to be considered treason. The most famous public figure to resist the Treason Act was Sir Thomas More.
Second Act of Supremacy 1559 
(The Act was passed in 1559, but is dated 1558 because until 1793 legislation was back-dated to the beginning of the session of Parliament in which it was passed.) Henry's Act of Supremacy was repealed (1554) in the reign of his staunchly Catholic daughter, Mary I. It was reinstated by Mary's Protestant half-sister, Elizabeth I, when she ascended the throne. Elizabeth declared herself Supreme Governor of the Church of England, and instituted an Oath of Supremacy, requiring anyone taking public or church office to swear allegiance to the monarch as head of the Church and state. Anyone refusing to take the oath could be charged with treason. The use of the term Supreme Governor as opposed to Supreme Head pacified Catholics and those Protestants concerned about a female leader of the Church of England. Elizabeth, who was a politique, did not prosecute layman nonconformists, or those who did not follow the established rules of the Church of England unless their actions directly undermined the authority of the English monarch, as was the case in the vestments controversy.
The consolidation of church and state under Royal Supremacy, as established by the Tudors, instigated political and religious strife in the succeeding centuries. This strife, along with similar struggles in Europe, is one reason there is a constitutional separation of church and state in many jurisdictions now. In the United Kingdom, however, the state, in the guise of the Crown, still retains a significant involvement in the established Church of England.
See also 
- Supreme Governor of the Church of England
- Religion in the United Kingdom
- State religion
- Separation of church and state
- "Henry VIII's Act of Supremacy (1534)- original text" English History. David Ross and Britain Express
- Thurston, Herbert (1913). "Henry VIII". Catholic Encyclopedia. New York: Robert Appleton Company.
- Chisholm, Hugh, ed. (1911). "Defender of the Faith". Encyclopædia Britannica (11th ed.). Cambridge University Press.
- Loades, David, Henry VIII and His Queens, England: Alan Sutton Publishing Limited, 1994, 179 pages
- "Treason Act, 1534" English Reformation Sources. Julie P. McFerran, 2003-2004
- Ridges, Edward Wavell (1915). Constitutional Law of England (2 ed.). London: Stevens & Sons. p. 312.
- THE ACT OF SUPREMACY (1559).
- Original text of the 1534 Act of Supremacy.
- Official text of the Acts of Supremacy as in force today (including any amendments) within the United Kingdom, from the UK Statute Law Database