 Ó Snodaigh argued there had been a strong tradition of Gaelic-speaking among the Ulster Protestant planters in the 16th and 17th centuries.Ó Snodaigh hoped a shared linguistic heritage would thus improve relations between Northern Ireland's antagonistic sects during "the Troubles".The book was strongly criticised by the British and Irish Communist Organisation, which saw it as a Social Democratic and Labour Party-inspired attack on their Two Nations Theory; Ó Snodaigh replied to their criticisms in subsequent editions.