An chéad rí den tuath [[Uí Díarmata|Uí Dhiarmada]] i g[[Contae na Gaillimhe]] dá bhfuil fianaise ann ba ea '''Tadhg mac Muircheartaigh''' (bás 971).
==Background Cúlra ==
''TadhgBa macbhall Muircheartaighé wasTadhg a member of thede [[Síl Muiredaig|Shíol Mhuireadhaigh]] dynasty, whoa ruledbhí asina ríthe na [[Connachta|gConnacht]] from there base inbunaithe centrali g[[Contae Ros Comáin]]. Faoi lár na 10ú haoise, theyfuarthas hadiad expandedleata south-westsiar intoó thedheas north-eastin oirthuaisceart of [[Contae na Gaillimhe|Chontae na Gaillimhe]]. Here,Ghabh agéag branchden ofchlann theroinnt kindredtailte seizedann territoryagus and renamed itthugadar [[Uí Díarmata|Uí Dhiarmada]],afterar itsan founderáit, ainmnithe as Diarmaid Fionn mac Tomaltaigh, who was in turn a great-grandson of Kingfionnó [[Indrechtach mac Muiredaig|IndreachtachIndreachtaigh macmhic Muireadhaigh]] (bás 723), rí Chonnacht.
