naming

So I had this name in mind for an Utau. However on the wiki there is a character with almost the exact same name (same first name, same first part of last name) but they haven't done anything with this Utau since 2013 that I could find. Would it be considered copying if I used the name I...

Disclaimers - I am NOT a Japanese teacher nor in 100% native level at Japanese even I have some Japanese background but I know enough Japanese to give some (basic) naming/writing tips for a character. - If you've done any of these "mistakes" what I list here, please, don't take it personally...