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Triennial Act 1641
Act of Parliament
Long titleAn Act for the preventing of inconveniencies happening by the long intermission. Of Parliaments.
Citation16 Cha 1 c 1
Other legislation
Repealed byTriennial Parliaments Act 1664
Status: Repealed
Triennial Parliaments Act 1664
Act of Parliament
Long titleAn Act for the assembling and holding of Parliaments once in Three yeares at the least, And for the repeale of an Act entituled An Act for the preventing of Inconveniencies happening by the long Intermission of Parliaments.
Citation16 Cha 2 c 1
Other legislation
Repeals/revokesTriennial Act 1641
Status: Repealed

The Triennial Act 1641 (16 Cha. I c. 1),[1] also known as the Dissolution Act, was an Act passed on 15 February 1641,[2][3] by the English Long Parliament, during the reign of King Charles I. The act required that Parliament meet for at least a fifty-day session once every three years. It was intended to prevent kings from ruling without Parliament, as Charles had done between 1629 and 1640. If the King failed to call Parliament, the Act required the Lord Chancellor to issue the writs, and failing that, the House of Lords could assemble and issue writs for the election of the House of Commons. Clause 11 was unusual because it explicitly stated that this Bill would receive the royal assent before the end of the parliamentary session. At that time, Bills did not customarily gain royal assent until after the end of the Session. Thus, if Clause 11 had not been present, the Act might not have come into force until the next parliament.[3]

In 1664, it was repealed by the Triennial Parliaments Act 1664 (16 Cha. II c. 1).[4] Though the new Act kept the requirement that a parliament be called at least once in three years, there was no mechanism to enforce this requirement. Thus, Charles II was able to rule for the last four years of his reign without calling a parliament.

Under the Triennial Act 1694, also known as the Meeting of Parliament Act 1694 (6 & 7 Will. & Mar. c. 2), Parliament met annually and held general elections once every three years. The country now remained in a grip of constant election fever (ten elections in twenty years) and loyalties among MPs were difficult to establish, which increased partisanship and rivalry in Parliament. This state of political instability is often known as the 'Rage of Party'. In 1716, the Septennial Act was passed, under which a parliament could remain in being for up to seven years. This Act ushered in a period of greater stability in British politics, with long-lasting parliaments and governments typical throughout much of the 18th century.


  1. ^ 'Charles I, 1640: An Act for the preventing of inconveniences happening by the long intermission.of Parliaments.', Statutes of the Realm: volume 5: 1628-80 (1819), pp. 54-7. Date accessed: 27 February 2007.
  2. ^ Using the Julian Calendar with the start of year adjusted to 1 January (see Old Style and New Style dates)
  3. ^ a b 27. The Triennial Act, Constitution Society Accessed 7 May 2008
  4. ^ 'Charles II, 1664: An Act for the assembling and holding of Parliaments once in Three years at the least, And for the repeal of an Act entitled An Act for the preventing of Inconveniences happening by the long Intermission of Parliaments.', Statutes of the Realm: volume 5: 1628-80 (1819), p. 513. date accessed: 5 March 2007.

Further reading

1 Annotation

Second Reading

Bill  •  Link

April 5th, 1664. In compliance with the King's expressed wish "the House immediately set about repealing the obnoxious Triennial Bill, which they stigmatized as derogatory to the prerogative of the Crown, and as a short compensation prepared another short one, which provided that parliaments should not be intermitted above three years" (Cobbett's " Parliamentary History," vol. iv., col. 292).
---Wheatley, 1904.

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Chart showing the number of references in each month of the diary’s entries.