I happily named some cells with one letter names: L, D, O, P … like that.
Because I like one letter variable names for ease of use when writing out formulas.
The system jibbed at ‘C’ because of something about it being a cell reference. I was in column C at the time.
So I played around a bit to see if that was the reason but it didn’t seem to be.
It seems of all the alphabet letters it didn’t like ‘C’. Why?