Belfast in County Antrim was enfranchised as a borough constituency in 1613.
Belfast was the place of election in this single-member constituency.
In 1661, following the restoration of the king, the Parliament of Ireland was re-established as it had existed before the Protectorate.
In the Patriot Parliament of 1690 summoned by King James II, Belfast was represented by one member.
The 300 members of the Irish House of Commons were reduced to 100 Irish members of the United Kingdom House of Commons.