What's going on exactly? You have the spirit of this person following you around? You had a dream or vision where you saw/heard this persons name? You were doing research and came across this name?
If the spirit of this person is following you, just talk to it. Its probably just lonely and wants to be around the living for a bit. She was alive once, she had friends, relatives, likes and dislikes, so treat her like she was alive. Be respectful, but don't be afraid. If you are having trouble communicating, you could try various methods like meditation, pendulum, skrying, or automatic writing.
If this persons name appeared in a dream or vision, it could be a past life. Same if you came across the name and it stuck out to you. You could try skrying or past life regression to see if there's anything, but don't dwell too much. If it is a past life, interesting, but its the past with no connection to this lifetime. You might find some wisdom, but don't let a past life rule this one.