Interesting Maps

Thought so, but Bullaunancheathrairaluinn aka Ballán an Cheathrair Álainn also in Galway is a wee bit longer than Muckanaghederdauhaulia aka Muiceanach idir Dhá Sháile.

Ugh the anglo-bastardisation of it all

“It’s All Greek To Me” In Other European Languages

Map created by languages.eu

For a start Henry viii had the bible translated to Welsh and available each church. However attempts for an Irish translation were resisted as heretical by Irish Catholics.

I think the difference is it was a used language, both written and spoken by native Welsh, whereas Irish was an oral tradition.

Even the reestablished RCC in Ireland in the 19th century were suspicious of Irish in fear of priests who had trained on the continent spreading revolution on return.

It was either church latin or English of the empire for them. I think we've had a map of the colleges on the continent set up to train Irish priests in exile from the earlier penal laws.

A lazy journo in Canada published a similar map of Arctic Circle as thus 🙄

It is from USGS - Map showing the Arctic Research and Policy Act of 1984 geographic area extent through the Bering Sea. 

I travelled by train from Holyhead recently. I was very pleasantly surprised by how many people - particularly younger generations - were conversing in Welsh. It's not something I was aware of on previous journeys. Also made me wonder of the possibilities for a renewed grá for the Irish language.

What's your defination of "Native Irish Speaker", there are many people for whom Irish is their first language and even some whom did not acquire English untill they went to school, and some of them are even younger than me.

Irish Catholics - outside the Anglican church - would have had no capacity to 'resist' an Irish translation being made.
In truth, the Anglican church in Ireland made no serious attempts to make use of the Irish language, either in church services or in producing religious works (including the Bible). Their focus was on promoting the use of English over the vernacular of the enormous majority of the population (a central tenet of the Reformation betrayed) - to the extent that clergymen who had insufficient command of English to fulfill their duties in that language were instructed to use Latin(!) instead of Irish.
Bedell, who, with assistance, translated the Old Testament, acted on his own initiative and faced considerable opposition for his efforts by the authorities. He won many admirers, however, from amongst the Irish people.

Re Wales - It was the growth of the Nonconformist tradition there that bolstered the use of Welsh and increased literacy amongst the people. The Anglican church was generally unfavourable towards the language.