I still am asking myself why I chose Martin as the protagonist's name, and Rachel for his mother's name. Not to mention Roderick for a classmate and Jana and Janelle for two other classmates (twin sisters). How do any of those sound to you? Some sites advise against using similar names in the same book, such as this one:
Names That Are Too Similar
Even after reading this, I don't intend to change the twins' names. I've known twins to have alliterative names and non-alliterative ones, and even rhyming names. Many boy-and-girl twins I have met do not have alliterative names, and I can only think of one or two such sets of twins that I have met personally.
Also from Wikihow:
I certainly wouldn't name a person in a book Elvis, but might easily use that name for a dog or cat. And I'm not even going to get started on Adolf 🙂
I honestly don't see any reason not use whatever names you want to use.
How do any of you choose your character names?