You can be pretty confident without a comprehensive database. If you're unsure about a name then don't pick that one.

And people that are dead won't be inconvenienced, so you can ignore them.

People (and lawyers) might get annoyed if you called your bot Avici, even though he is dead and won’t personally be inconvenienced by it.

Naming something after a celebrity is a different issue entirely. It's actually a bigger problem if the celebrity has a non-regular name!