The key signatures C-flat minor and G-flat minor do they exist?

Do the key signatures C-flat minor/G-flat minor exist? Theoretically, they can be said to exist, but since these keys are the relative minor keys of E♭♭ major and B♭♭ major, respectively, the key signatures involve double flats. They are impractical and weird.

1. Does G flat minor exist?
2. What is the key signature of C flat minor?
3. Is C flat a key signature?
4. Do C flat and F flat exist?

Does G flat minor exist?

The G-flat natural minor scale has 2 double-flats, 5 flats. Warning: The G-flat key is a theoretical minor scale key. This means: > Its key signature would contain either double-sharps or double flats.

What is the key signature of C flat minor?

The C-flat natural minor scale has 3 double-flats, 4 flats. Warning: The C-flat key is a theoretical minor scale key. This means: > Its key signature would contain either double-sharps or double flats.

Is C flat a key signature?

Its key signature has seven flats. The direct enharmonic equivalent of C-flat major is B major, a key signature with five sharps.
...
C-flat major.

Do C flat and F flat exist?

Why is there no C flat or F flat? Simply because, acoustically speaking, there is no room in our current system for another pitch between B and C, or E and F. The scale was originally conceived of as a 7 note scale, with the notes A, B, C, D, E, F, G.