[SaF] origin of la-dee-dah

[Vicki]

Hi...

Does anyone know where I can find the origin of the word "la-dee-dah"?
I've tried a number of word pages, using a variety of spellings...
ladida
ladeeda
ladeedah
latida
lateeda
lateedah
ladidah

A friend claims the expression is derived from the name of a tennis
player.  Anyone know about this?

Thank you...

Vicki