22 May 1922
An agreement was signed by Éamon de Valera and Michael Collins was announced and approved by Dail Eireann, the Parliament of Ireland. It provided for an agreed panel of candidates to be put forward by Sinn Fein, preserving the balance of the parties and the formation of a coalition Government.
Rioting continued in Belfast and a number of historic properties were set on fire by the Irish Republican Army, including Shanes Castle. Lord O’Neill, the owner of the castle, was held at gunpoint whilst the house was raided and then destroyed in flames. Hugh O’Neill, the son of the owner, was the Speaker of the Northern Ireland House of Commons, and he also later became the Father of the House in the Westminster Commons.