I wonder if you mean Margaret (not Mary) Queen of Scotland, whose day is November 16? I took her as my "saint" at confirmation, which is why I ask. She was the wife of Malcolm III of Scotland, and founded and supported the monastery of Iona.
Thats right. I met Margaret. We had a special early celebration of her day this Sunday at Mass. I have thought that having a church named after her in a area that had the heritage we did was apt.
Queen Margaret (st.) wife of Malcolm Canmore (in gaelic ceann mor= big head) was responsible for Anglicizing the country as well. Large land grants were giving to English nobles at the time esp. on the border.