England takes control of the whole island of Ireland.
English and Scottish settlers colonize northern Ireland and found the Plantation of Ulster.
Following an Irish rebellion and six year war, the British under Oliver Cromwell take much of the island and force native Irish into the west.
Under the (Irish) Acts of Union, Ireland and Great Britain are incorporated into the United Kingdom of Great Britain and Ireland.
Irish Potato Famine causes an estimated 1 million Irish deaths and spurs 1 million to emigrate.
Richard John Griffith publishes “Griffith’s Valuation,” a comprehensive study of the land and property boundaries in Ireland.
Southern Ireland becomes the Irish Free State; six northern counties remain part of the United Kingdom (now Northern Ireland).
New constitution re-establishes the Republic of Ireland (formally recognized by Great Britain in 1949).