I went through the following exercise with another song on the "Folk History" thread - Errors, misinformation and inaccuracies detailed in italics. I know it the song was written and intended as a bit of a dig but it does show how "folk history" cannot be relied upon, not that this little ditty will have any legs at all - instantly, and thankfully, forgettable.

Jim McLean's Wedding Song

I once was a lady who knew her own mind.
I stood up for women and all of mankind.
But along came Prince Harry to make me his bride
So I knelt down before him and swallowed my pride,
    With a toorali oorali oorali ay.

I won't need to wait for a passport like some,
Prince Charles just whispered a word to his mum
Who spoke to Theresa and they all did their bit,
They Windrushed me a passport so now I'm a Brit.
    With a ....

My wedding will cost just a few hundred grand
For horses, policemen and soldiers so grand.
And some of the public will get an invite,
But bring your own picnic for money is tight.
      With a ....

No tax on our bedrooms, you've paid for our rent,
No mortgage or gas bills, not even a cent.
And soon there'll be babies, one, two maybe three.
I won't have to worry for EVERYTHING'S FREE!
                                       
      With a ....

I'll never be Queen, there're too many up front.
Camellia and Catherine both in the hunt.
So maybe I'll move to a wee Scottish glen
For Scotland will be a Republic by then."
      With a ....

Not really much left of the song that reflects reality, but that was never the intention of the composer of this little ditty.