Some sources state that Christianity was brought to the Isle of Man around 500 AD by Celts from Ireland, perhaps by St. Patrick himself.

[4] On 23 July 1947 Taoiseach Éamon de Valera made an official one-day state visit to the island.

[8][9] These agreements serve two general purposes: Ireland and the Isle of Man have collaborated on preparing reports and jointly pressing the UK government to shut down the Sellafield nuclear plant.

[11] According to the governments, the location of the Sellafield plant, close to both the Isle of Man and Ireland, poses an environmental risk.

The platform links the governments of Ireland, the Isle of Man, and the UK, and various local jurisdictions, to collaborate on planning for development of the Irish Sea and bordering areas.

[13] In 2004, a natural gas interconnection agreement was signed, linking Ireland with Scotland via the Isle of Man.