Muintir Eolais

Munitir Eolais
6th–7th century – 1603
Territory of Muintir Eolais (Green) within County Leitrim
Territory of Muintir Eolais (Green) within County Leitrim
StatusTuath
Religion
Roman Catholic
GovernmentElective monarchy
Taoiseach 
• 890–940
Eolais mac Biobhsach
• 1553–1580
Sean Reynolds
Area
• Total
500 km2 (190 sq mi)
Castle John and Jail Island at Lough Scur circa 1791

The Muintir Eolais of Conmaicne Réin were nobles of Gaelic Ireland. For seven hundred years from the 8th century, they lived in and ruled an area roughly conterminous with present-day south County Leitrim. Their territory comprised the lands named Maigh Nissi and Maigh Rein, today the baronies of Leitrim and Mohill respectively.[1]

The Mag Raghnaill, O'Mulvey, and Mac Shanley rule became increasingly fragmented throughout the 16th century. The tuath of the Muintir Eolais collapsed with Irish defeat in the Nine Years' War, and became largely forgotten with the English occupation of Ireland.