If you have ever called someone by a wrong name, then you know the embarrassment that comes with it. Some people will totally ignore you once you get their name wrong. Names are important to people. There are names you mention and you get access to things that you had no access to before.
There are people who prefer to use their parents’ names because of the honor and respect that is given them. Others prefer to use pseudonyms rather than their real names. Therefore to avoid creating enmity with people, you need to be keen on the name that they prefer to use.