The Habeas Corpus Act 1679 is an Act

Act of Parliament

An Act of Parliament is a statute enacted as primary legislation by a national or sub-national parliament. In the Republic of Ireland the term Act of the Oireachtas is used, and in the United States the term Act of Congress is used.In Commonwealth countries, the term is used both in a narrow...

 of the Parliament of England

Parliament of England

The Parliament of England was the legislature of the Kingdom of England. In 1066, William of Normandy introduced a feudal system, by which he sought the advice of a council of tenants-in-chief and ecclesiastics before making laws...

 (31 Cha. 2 c. 2) passed during the reign of King Charles II

Charles II of England

Charles II was monarch of the three kingdoms of England, Scotland, and Ireland.Charles II's father, King Charles I, was executed at Whitehall on 30 January 1649, at the climax of the English Civil War...

 by what became known as the Habeas Corpus Parliament

Habeas Corpus Parliament

The Habeas Corpus Parliament, also known as the First Exclusion Parliament, was a short-lived English Parliament which assembled on 6 March 1679 during the reign of Charles II of England, the third parliament of the King's reign. It is named after the Habeas Corpus Act, which it enacted in May,...

 to define and strengthen the ancient prerogative writ of habeas corpus

Habeas corpus

is a writ, or legal action, through which a prisoner can be released from unlawful detention. The remedy can be sought by the prisoner or by another person coming to his aid. Habeas corpus originated in the English legal system, but it is now available in many nations...

, whereby persons unlawfully detained cannot be ordered to be prosecuted before a court of law.

The Act is often wrongly described as the origin of the writ of habeas corpus, which had existed in England for at least three centuries before.