Neither. Though the Nationalist community is predominately Catholic, they'll likely let nearly anyone join due to their such limited recruits.
The IRA has had both catholic and protestant members. Ireland has a catholic majority of around 75% so most in the IRA were catholics, but they did have many protestant members. Names like George Plant, Jack White from Broughshane in County Antrim, George Gilmore from Portadown and Erskine Childers are well known protestant IRA members. The IRA in belfast had protestant commanders such as Billy Smith, Rex Thompson and John Graham. They were nicknamed 'The Prod Squad'. Ivor Bell was another protestant IRA member who was on the Provisional IRA Army Council. The I.N.L.A was founded by a protestant Ronnie Bunting and Noel Lyttle was also a protestant member of the I.N.L.A Irish republicanism was founded by a Protestant Wolfe Tone who once said; "To subvert the tyranny of our execrable government, to break the connection with England, the never-failing source of all our political evils and to assert the independence of my country- these were my objectives. To unite the whole people of Ireland, to abolish the memory of all past dissensions, and to substitute the common name of Irishman in place of the denominations of Protestant, Catholic and Dissenter - these were my means."- Any religion can be a member of the IRA However, to give an indication of the likely statistics, the Sutton index of deaths records that, of the 394 Republican dead from the recent troubles, 366 were Catholic, 3 were Protestant and 25 were 'not from Northern Ireland' (Mostly from the Republic of Ireland and probably mostly Catholic)
She was a Protestant
James I of England was Protestant not Catholic.
The name can be either Protestant or Catholic.
Protestant
The gathering of Italian Bishops to discuss the Catholic response to the Protestant Reformation was called the Council of Trent.
Protestant.
Protestant
Protestant.
He was a Protestant. His wife was Catholic. Many people accused him of being a catholic because he wore extravagant clothing and Catholics were known to like extravagant things.
You are either a Catholic or a Protestant. You cannot be a Protestant Catholic. That is an oxymoron - like pretty ugly, jumbo shrimp, etc.
City are protestant, Rovers Catholic due to where their support comes from, i.e. Rovers fans Fishponds which has relatively high % of Catholic living their historically. However, Rovers fans sign anti-IRA songs so not really sure!