Yes, there were probably are some Protestants who speak the Irish language. That is not to say that most Protestants speak Irish or that most Irish-speakers are protestant.
Most Irish people are Christians.
most Irish people now live in cities and towns
paddys or micks
It is an English name and most likely has no Irish Gaelic form.
Citizens with Irish origin are not usually circumcised.
Most Irish are Catholics
Most Irish also speak Irish. The British killed people if they spoke Irish and it was outlawed. Some areas of Ireland are completely Irish-speaking, road-signs, newspapers, Garda(police).
Corned beef and cabbage is the most popular Irish entree.
the Irish
Some Irish people do, but most Irish people do not. There are also people from other countries that do have red hair.
the Irish independent, the Irish times, are most well known around Ireland.