The Cruthin were the earliest inhabitants of both Britain and Ireland to whom a definite name can be given. This book examines their contentious history, from distant origins to their influence on the present day. Their story is a timely reminder of an often ignored common identity. With much original research, this is a compelling and impartial exploration of an ancient people. The fact that so little is known about them is an important and tragic consequence of Irish history itself. On its 40th anniversary, Ian Adamson's influential book continues to provoke debate. This updated edition shows that the Cruthin controversy remains as relevant and challenging as it ever was.