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
In 1568, she was moving towards Dumbarton Castle after her escape from Lochleven Castle when her forces were intercepted and defeated at the Battle of Langside. Mary then fled to England and captivity, never to return. But Mary's supporters in Scotland were still active and still held Dumbarton Castle. On 1 May 1571 troops under the command of a Captain Crawford captured the castle after climbing the cliffs on the north side of The Beak in darkness, and Mary's remaining supporters in the west of Scotland either fled or were killed.