 Early historical and genealogical records note the existence of major groups such as the Cruthin , Corcu Loígde , Dál Riata , Dáirine , Deirgtine , Delbhna , Érainn , Laigin , Ulaid . Slightly later major groups included the Connachta , Ciannachta , Eóganachta . 
 Early historical and genealogical records note the existence of major groups such as the Cruthin , Corcu Loígde , Dál Riata , Dáirine , Deirgtine , Delbhna , Érainn , Laigin , Ulaid . Slightly later major groups included the Connachta , Ciannachta , Eóganachta . 
Early historical and genealogical records note da existence of major groups such as the Cruthin , Corcu Loígde , Dál Riata , Dáirine , Deirgtine , Delbhna , Érainn , Laigin , Ulaid . Slightly later major groups included tdaConnachta , Ciannachta , Eóganachta .