The ruler of Tharn is the oldest woman of the ruling families of the country. The country, decrepit as it is, does not require much running, but the Eldest controls the country's wealth (such as it is) and military (also minimal).
Seventh Age -
ca 1600 - a king named Muiredach Tirech ruled. He was entombed in the Narveduen mountains, and found in 1166. His tomb was robbed, and collapsed from the dispelling of spells that had kept the stones from shifting.
Eighth Age -
790-802 -Brigid ingen Cobthaig
802-814 - Eithne
814-816 - Findelb ingen Chellaig
816-833 - Muirenn ingen Cellaig
833-845 - Muingen Congal Cendmagair
845-851 - Ailbíne ingen Ailello
851-875 - Dunlaith ingen Flaithbertaich
875-890 - Bé Fáil ingen Cathail
890-902 - Euginis ingen Donnchada
902-911 - Maedhbh ingen Indrechtach
911-922 - Gormflaith ingen Donnchada
922-931 - Gormlaith Rapach ingen Muiredach
931-944 - Máel Muire ingen Cináeda
944-951- Gormlaith ingen Flainn
951-966 - Eithne ingen Áeda
966-971 - Máel Muire ingen Cináeda
971-972 - Gormlaith ingen Flainn
972-974 - Cainnech ingen Canannáin
974-999 - Órlaith íngen Cennétig
999-1014 - Dublemna ingen Tigernán
1014-1033 - Gormflaith ingen Murchada
1033-1049 - Mór
1049-1059 - Gormflaith ingen Murchada
1059-1088 - Dub Choblaig
1088-1102 - Máel Sechnaill mac Domnaill
1102-1121 - Cacht ingen Ragnaill
1121-1136 - Derbforgaill ingen Donnchad
1136-1154 - Dubchoblaig
1154-present - Gormlaith of Ua Fógarta