The Tudors held an ambivalent attitude to Ireland after Henry VIII had unilaterally turned the Medieval Lordship into a Kingdom in 1541. The Reformation which the Tudors tried to introduce lost allegiance from the bulk of the native Irish population, both the Gaelic and English speakers (the so called ‘Old English’). They saw it as an alien attack.
The early years of the Reformation in the 1540’s & early 1550’s was marked by negotiation rather than exploitation. Most Irish Bishops accepted Henry VIII’s oath of supremacy although many kept channels of communication open with Rome. Despite opposition, the first English BCP secured fairly widespread use in Ireland under Edward VI.
Mary Tudor restored traditional religion to Ireland. She implemented plans to plant immigrant ‘New English’ settlers into the Midlands Region of Ireland. Elizabeth I later promoted further plantation schemes. Plantation however proved fatal to ‘Old English’ religious loyalty to England as well as an obstacle to similar loyalty among Gaelic lords.
Plantation provoked major warfare in Ireland in the 1570’s and 1590’s. The incoming English saw Gaelic culture as an obstacle whilst the Irish viewed the incoming English as enemies. The Gaelic aristocracy allied with agents of the Counter-Reformation and with England’s enemies in mainland Europe, mainly Spain. The Tudor regime banned the Catholic Mass in Ireland in 1568 but this proved futile as religious energy was all on the Catholic side having formed its political alliance with the Irish nobility. By the 1580’s the older Irish clergy many of whom had continued to maintain traditional Catholic worship whilst outwardly conforming were either dying off or quitting the established Church in favour of Rome. Their replacements had to choose between allegiance to Elizabeth or the Pope. Increasing numbers chose the Pope.
The Irish aristocracy, gentry and town rulers established their own contacts with the rest of Europe independently of Tudor England. There was abundant sea access to Europe that could bypass England. Many Irish left for Catholic Spain or France either permanently to get an education in a non-Protestant setting. Many men trained as priests in Spain and then returned home to Ireland to build on the popularity of the mendicant Orders whose communal life was unbroken through the Reformation in parts of Ireland beyond effective English control. The Jesuits had established a permanent presence in Ireland towards the end of the 16th century.
Unlike in Wales where Protestantism was successful partly due to Welsh translations of the Bible and the BCP, attempts to promote Protestantism in Gaelic were late and half hearted. Elizabeth took personal interest in efforts to create a Bible in Gaelic but a complete Gaelic Bible didn’t appear until the late 17th century. In 1621 the Dublin secular administration officially suspended enforcement of the monetary fines for Catholic recusancy and this was one of the chief indications that the established Church of Ireland was grudgingly beginning to admit defeat. By 1635 there was a newly built Jesuit church in Dublin, a victory for the Counter-Reformation.