| Date | | | |
| 13-May-1921 | | Nominations to Parliament of Southern Ireland; 128 Members returned unopposed. | |
| 25-May-1921 | | Custom House, Dublin, set on fire by armed civilians and completely destroyed. | |
| 17-Jun-1921 | | Parliament of Southern Ireland opened in College of Science, Dublin, but only four Members (Unionist) attended. | |
| 26-Jun-1921 | | Mr. Lloyd George invites Mr. De Valera to attend an Irish Settlement Conference in London. | |
| 4-Jul-1921 | | Conference at Mansion House between Sinn Fein leaders and Southern Unionists. | |
| 8-Jul-1921 | | Truce declared between Government and Sinn Fein to operate as from the 11th. | |
| 14-Jul-1921 | | Mr. Lloyd George and Mr. De Valera meet at Conference in London to discuss basis of proposed Peace Conference. | |
| 22-Aug-1921 | | Government Peace offer rejected by Dail Eireann after sitting in secret session for several days. | |
| 11-Oct-1921 | | Further Conference between Government representatives and Sinn Fein delegates in London. | |
| 6-Dec-1921 | | A Treaty between Great Britain and Ireland signed in London by representatives of Great Britain and Delegates from Ireland. | |