Since Vatican II great progress has been made towards an ecumenical understanding and appreciation of our Blessed Lady, even as there has been a certain development in Catholic understanding. This essay looks briefly at Reformation mariologies, those of Luther, Calvin and Zwingli before moving on to consider three Scots: John Knox, Edwin Muir and John Macquarrie. Arguably, John Macquarrie has shown one of the most careful retrievals of Marian theology, not least in his Principles of Christian Theology and Mary for All Christians. His final mariological sounding took him back to his Celtic roots, and is summarized here. John Macquarrie died in 2007, and this essay is dedicated to his memory.