I have always used my maiden name, even when married.
My ex has recently re married and there is a new Mrs X
My youngest son (9) has asked me if he can change his name from his fathers to mine. It is not the first time he has asked if he can do this. I think he doesnt like it that we are not obviuosly related. We are often asked by immigration if they are my kids.
I know this is going to cause a problem but have thought I might just hyphenate our names together and then the kids can choose what they wish to do when they are older. Any advice from anyone has experience of this?