The only problem is that only the South Branch (sort of) flows north. The main course, if anything, heads south. I grew up in Eugene, OR, at the headwaters of the Willamette, which really does flow north. But I don't recall any of my high school chums telling me about the Willamette and the Nile.
How did Saint Margaret of Scotland die? Margaret died on November 16, 1093, at Edinburgh Castle, Scotland, four days after her husband and son died in defense of the castle. Edit
The request was granted by Pope Clement X and the feastday of St. Margaret in the general calendar of the Latin Rite was allocated to the 10th of June. We have an account of one celebration of the feast of St. Margaret in the Scots College, Rome, on June 10th, 1717.