Validate names with accent input in javascript

I making a form to get user name and save in database.

I Need a regex that accept names with accent like Cláudio, João, Carlos, and reject Tes3, Gabriel#. I need just letters, cuz the name of people just have letters.

Already tried these regex: /[a-z u00E0-u00FC]{5,50}/i,/^[a-zA-Z]+('|-|.)[a-zA-Zs]+$/,^[A-Za-z]+$, but none worked.

Tks for reading =)