You could start with people you know, certainly. But I would still encourage you to reach out to strangers to widen your data pool.
[ And also because maybe Anon will get to meet some nice new people and be less lonely. ]
In fact, negative reactions are informative in themselves. Someone who is indifferent to their name likely will not react strongly; therefore, someone who becomes upset by your inquiry may have strong feelings about their name. Such individuals might be the most helpful subjects for your research.
no subject
[ And also because maybe Anon will get to meet some nice new people and be less lonely. ]
In fact, negative reactions are informative in themselves. Someone who is indifferent to their name likely will not react strongly; therefore, someone who becomes upset by your inquiry may have strong feelings about their name. Such individuals might be the most helpful subjects for your research.