What’s the French for “Fiddle de dee”?

Margaret of Scotland, Wife of Louis XI, provides an answer for Lewis Carroll

Here’s a question to explore,

A query Alice merely parried

When she was examined for

The right to wear the crown she carried,

And to be a pawn no more.

Perhaps the French for “fiddle de dee,”

And its meaning, may be seen

In those sad words that a dauphine,

Ever a pawn and never a queen,

Said on her deathbed: “Fie de la vie.”

If so, does “fiddle de dee”belittle

Life any less than it does a fiddle?

–Henry George Fischer