My given name is Donald, but most knew me as Don.
Probably people would think that Donna made sense. I have nothing against that, but it did not seem to fit.
However, I have been a motorsports fan since I was a child. I remembered that Mario Andretti’s wife was Dee Ann. Sadly she passed away since I adopted her name. I decided to take the space out to encourage being called DeeAnn instead of Dee. That has worked to an extent.
I was a bit surprised that others in the lesbian community have similar spellings, but not exactly the same: