This mnemonic was traditionally taught to English schoolchildren to help them remember the monarchs of England and Great Britain.
Willie, Willie, Harry, Stee,
Harry, Dick, John, Harry three;
One, two, three Neds, Richard two,
Harrys four, five, six… then who?
Edwards four, five, Dick the bad,
Harrys twain and Ned the Lad;
Mary, Bessie, James the Vain,
Charlie, Charlie, James again…
William and Mary, Anna Gloria,
Four Georges, William and Victoria;
Edward, George, and both again,
Now Bessie Two and that’s the end.
Also a quick mnemonic to help remember the Royal Houses;
No Plan Like Yours To Study History Wisely
(Norman, Plantagenet, Lancaster, York, Tudor, Stuart, Hanover, Windsor)