On This Day - What happened 21 January 1919 AD

While it was not clear in the beginning of 1919 that the Dáil ever intended to gain independence by military means, and war was not explicitly threatened in Sinn Féin's 1918 manifesto, an incident occurred on 21 January 1919, the same day as the First Dáil convened. The Soloheadbeg Ambush, in County Tipperary, was led by Seán Treacy, Séumas Robinson, Seán Hogan and Dan Breen acting on their own initiative.

On 21 January 1919 they formed a breakaway government (Dáil Éireann) and declared Irish independence.

Sinn Féin won 91% of the seats outside of Ulster on 46.9% of votes cast, but was in a minority in Ulster, where unionists were in a majority. Sinn Féin pledged not to sit in the UK Parliament at Westminster, but rather to set up an Irish Parliament. This parliament, known as the First Dáil, and its ministry, called the Aireacht, consisting only of Sinn Féin members, met at the Mansion House on 21 January 1919.