My dd has changed her name. She is 16 and did it by deed poll on her 16 birthday so that her GCSE certificates would be in her new name.
She is non binary and this is the end of 3 years of her working towards it. I don't agree with it, but I have had to think very hard about what is best for her, and that led to the choice to accept and love.
When she decided to change her name, her (old) first name is female. Her middle name has a male and female varient, think Georgia and George. She chose a name based on this which was unisex eg Georgie/Charlie etc.
Over the last year we have talked a lot about names. We talked about why we had chosen her name and the importance of it. Her middle name is actually a family name, so for her to have kept that mattered. Her first name reflected the fact that she has 2 nationalities.
She has taken on board what I said and asked us to choose with her a name from her dad's nationality as a new middle name so that remained part of her name.
I'll be honest. I found it really, really hard. People don't usually change their name. They may choose a nickname or to use a middle name etc, but properly changing their name is not common, especially goign as far as to do it legally. As is said 1,000 times on baby names, your parents got the chance to choose when they named you, now it is your chance to choose when you name you baby. Except if you reject your parents choice, that's not true is it?
But I recognised that it was my issue. I had to go through a grieving process really. My wonderful dd has actually been incredibly kind and thoughtful about the way she has done it, and keeping her family middle name and making it her new name was extrememly touching to me. When it came to the deedpoll, she said that the other option was to get GCSE in her old name and then later get her birth certificate changed in order to be able to change her certificates. She didn't want to do that as her birth certificate represented who she was for the first part of her life.
I have asked her not to use the phrase 'deadname' I have explained why that is so hurtful and not true either, and that there are 20 other ways of saying it which are fine, but deadname really is not. She has respected that.
It has been a bloody hard few years, and the name change has been just the icing on the cake.