History

Brian Boru's son Murchad mac Briain was killed at Clontarf on 23 April 1014. The 1066 seat is a later man of the same Uí Briain house. The annals name a Murchad, son of Donnchad mac Briain, who was killed in 1068, while Toirdelbach Ua Briain held Munster.
Little of that short life is firm, and no likeness survives. The game makes its Murchad a petty king in Munster and the ruler the tutorial uses.
The default 1066 bookmark keeps Murchad in Munster and uses him for the tutorial. The game rule True King of Munster has two settings. Classic leaves Murchad on the seat. Historical seats Toirdelbach Ua Briain, and selecting Murchad on the scenario screen plays as Toirdelbach. The bookmark text names house Briain. The dynasty badge on the legends card is Dál gCais.
In the game
| Seat | Detail |
|---|---|
| Start | 1066 |
| Bookmark | Rags to Riches |
| Title | Munster |
| Realm size | 3 counties |
| Status | Independent |
| Difficulty | Easy, the bookmark rating in patch 1.20.1.2 |
| Culture | Irish |
| Faith | Insularism |
| Dynasty | Dál gCais, house Briain |
| Government | Feudal |
| Age | 39 |
How to play

Goal. Form the Kingdom of Ireland. The requirements are on the decision tooltip.
Pause on the first day and look at the heir. The seat is feudal, Irish, and Insular, and the bookmark rates it Easy. Most other Irish rulers are independent counts, so a fabricated claim or an accepted offer of vassalization is how the realm grows. Open the Kingdom of Ireland decision and follow the tooltip in the version you are playing. While your top title is still the petty kingdom, grant counties and baronies. A duchy you hand away is a title of your own rank, and that vassal leaves independent. The beginner guide is the first-night walkthrough for this seat. The Emerald Isle achievement is the kingdom run this bookmark is known for. The achievement panel lists the conditions.
Where this run fails. Creating a second duchy before the kingdom exists, dying with an empty heir line, or turning on the Historical setting of True King of Munster when you meant to play Murchad. That setting seats Toirdelbach and, if you picked Murchad on the scenario screen, plays as Toirdelbach.