Ruaidhràmac Coscraigh was King of South Connacht and of UàBriúin and a fourth great-grandson of the eponym of Clann Cosgraigh. Ruaidhri is mentioned in the Annals of Inisfallen and Tigernach as well as the Leabhar na nGenealach.
RuaidhrÃÂ was slain fighting Conchobar mac Mael Sechnaill, King of Corcu Modruad and Mac Comhaltan Ua Cleirigh of the UÃÂ Fiachrach Aidhne in 993.