the laws and constitutions of the loyal orange institution of scotland state no ex roman catholic will be admitted into the institution unless he is a communicant in a protestant church for a reasonable period likewise the constitution laws and ordinances of the loyal orange institution of ireland state no person who at any time has been a roman catholic shall be admitted into the institution except after permission given by a vote of seventy five per cent of the members present founded on testimonials of good character in the th century rev dr mortimer o'sullivan a converted roman catholic was a grand chaplain of the orange order in ireland in the 's scotland also had a converted roman catholic as a grand chaplain rev william mcdermott quote taken from the article the orange order an evangelical perspective orangeism compared with freemasonry some evangelical objections considered a reply to w j mck mccormick by rev ian meredith b a m th grand chaplain grand orange lodge of scotland rev brian kennaway m a deputy grand chaplain grand orange lodge of ireland