There are many websites with histories of the Stone of Scone, which is much more tangled then this article makes out. Here's one:
http://www.tartans.com/articles/stoneofscone.html
Also note that the current occupant of the English throne is a woman, as have been several of her predecessors.
...for God promised through Jeremiah (33: 17) that "David shall never lack a man to sit upon the throne of the House of Israel."
Stone Of Destiny