Norman invasion

The Norman invasion of Ireland was a two-stage process that began on May 1, 1169, when a force of loosely associated Norman knights landed near Bannow, County Wexford, at the request of Diarmait Mac Murchada, the ousted King of Leinster who had sought their help in regaining his kingdom. On October 18, 1171, Henry II landed a much bigger army in Waterford to ensure his continuing control over the preceding Norman force. In the process he took Dublin and had accepted the fealty of the Irish kings and bishops by 1172, so creating the Lordship of Ireland that formed part of his Angevin Empire.