[[Íomhá:Kingdom of Thomond.png|deas|250px|thumb|Tuadhmhumhain roimh theacht na Normannach]]
''TheMaidir exactle originbunús ofna Thomondríochta, originallyó asthús anmar internalchuid partde ofchúige MunsterMumhan, isní debated.fios é Itgo iscruinn. generallyheldCreidtear thatgur thelonnaigh an [[Déisi Muman|Déise Mumhan]] pushedann north-west starting from theón 5ú togo theluath earlysan 8ú haois, takingag theionradh areaas froman theoirdheisceart, ag gabháil an cheantair ó [[Uí Fiachrach Aidhne]] na g[[Connacht]]. ''Eventually, the Dál gCais rose to power in all of Munster, to the detriment of the Eoghanachta. The person most famously associated with this is [[Brian Bóramha]], [[Ard-Rí na hÉireann]], best known for his feats at the [[Cath Chluain Tarbh]]. Four generations down the line and after providing three more High Kings, the Dál gCais were unable to hold onto all of Mumhan and so Tuamhain came into being as a separate entity.
[[Íomhá:Sword of Nuada.png|mion|120px|Claíomh Nuadha]]