by whom?
By Cambro-Norman knights led by Richard de Clare
Ireland
On 1 May 1169, an expedition of Cambro-Norman knights, with an army of about 600 men, landed at Bannow Strand in present-day County Wexford. It was led by Richard de Clare, known as 'Strongbow' owing to his prowess as an archer. The invasion, which coincided with a period of renewed Norman expansion, was at the invitation of Dermot Mac Murrough, King of Leinster.

when was the last time ireland experienced a hurricane UNANSWERABLE where did this hurricane make its landfall? Ireland what kind of storm it is? Tropical cyclone and what is meant by this cyclone? It is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain or squalls what was the wind speed of this hurricane? Low Pressure how was its status in uk? After passing through Ireland, the storm brought strong winds and heavy rain to parts of Scotland and Wales, resulting in some damage and flooding in the region did it cause any damage? The winds downed  trees and more than 1,000 telephone lines across the region, major rail lines were suspended,An estimated 200 homes and two churches in Strabane were damaged to name a few the place where it made its landfall; was it invaded by anyone? Yes on 1 May 1169
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Ireland [SEP] Norman and English invasions
He wanted to re-exert royal authority over the invasion which was expanding beyond his control. Henry successfully re-imposed his authority over Strongbow and the Cambro-Norman warlords and persuaded many of the Irish kings to accept him as their overlord, an arrangement confirmed in the 1175 Treaty of Windsor. The invasion was legitimised by the provisions of the Papal Bull "Laudabiliter", issued by an Englishman, Adrian IV, in 1155. The bull encouraged Henry to take control in Ireland in order to oversee the financial and administrative reorganisation of the Irish Church and its integration into the Roman Church system. Some restructuring had already begun at the ecclesiastical level following the Synod of Kells in 1152.