What's the name and what's the relation of the people who share it?
Is it weird? Does it create confusion?
Do you think it's rude or awkward to use a name that is already in your close family?
How would you feel if a relative used your name for their own kid?
My sister and my aunt have the same name, but my aunt was married in when my sister was about ten, so there was little choice in "reusing the name." It doesn't create too much confusion... we usually know who's being talked about based on the context. I think that's the only case in my family.