The Laws and Constitutions of the Loyal Orange Institution of Scotland 1986 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 1967 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 39 In the 19th century Rev Dr Mortimer O Sullivan a converted Roman Catholic was a Grand Chaplain of the Orange Order in Ireland In the 1950 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