A very old thread has refreshed a very old memory:
The first two lines and the structure have been popular even before ?. Murphy used them for (t)his variant.

"Oh, he is the greatest mix up that I have ever seen,
his father is a German and his mother is a queen..."

has been sung about the son of Queen Victoria and Prince Albert and has been sung, more recently, about Prince Charles (Alastair MacDonald did that, I'd say).

Wolfgang