The origin of "Battle Ends And Down Goes Charles' Father"?

Question

The order of the flats is given by the mnemonic "**B**attle **E**nds **A**nd **D**own **G**oes **C**harles' **F**ather", and the order of sharps by the reverse ("**F**ather **C**harles **G**oes **D**own **A**nd **E**nds **B**attle"). What is the history behind this strange phrase?

Answer 1

So is the reverse of the saying “Father Charles Goes Down And Ends Battle” the order that sharps appear .