Delbhna Tir Dha Locha

Dealbhne Thíre Dhá Loch(a) ("The Dealbhne of the Two Lochs") was a tuath (a tribal kingdom) of medieval Ireland, located in Iar Connacht in the west of Co. Galway in the province of Connacht, Ireland. The two lochs concerned were Loch nOirbsean (Loch Corrib, a fresh water loch) and Loch Lurgain / Galway Bay, a sea loch). The Dealbhne / Dealbhnaí / Delbhna were any early tribal grouping with a number of different branches in Ireland.

Dealbhne Thíre Dhá Locha was also known as Dealbhna Fiodh/Feadha ("The Delbhna of the Fews) "Fiodh", anglicised the Fews, literally means "heather", denoting a rough, unfertile area.

Dealbhne Thíre Dhá Locha comprised of the civil parishes (which are coextensive with the medieval parishes of the same names) of Kilcummin, Killannin, Moycullen and Rahoon. Conmaicne Mara / Connemara bordered the territory on the west while Joyce Country lies to the north of the territory. The entire territory west of Galway City is now referred to as Connemara.

Tír Dhá Locha was divided into two sub-sections; Gnó Mhór/Gnó Mór which covers the civil parish of Kilcummin and most of the civil parish of Killannin and Gnó Beg, which covers the civil parishes of Moycullen and Rahoon and part of the parish of Killannin. Loch Lonáin north of the village of Maigh Cuilin and the Aille river between the villages of An Spidéal and Indreabháin are the principal features which mark the border between Gnó Mór and Gnó Beag. Ó hAdhnaigh (Heeney) was the chieftain of Gnó Beag, Mac Conraoi (anglicised - Conry, King) ruler of Gnó Mhór. In the 1200s the O Flahertys (lords of Uí Bhriúin Seola) fled into this area and the rest of Iar Chonnachta during the Anglo-Norman invasion of Connacht. The O Flahertys ruled Iar Chonnachta until the upheavals of the mid 17th century.