No, it isn't wrong, it's normal & part of the fun & enjoyment of doing your family tree.
We all get excited about different things, not necessarily anything to do with famous people.
More than 10 years ago, my maternal aunt told me a story & gave me the name of an 'aunt' on her mother (my maternal g/mother) side but she didn't know her maiden name, only her shortened forename (Cassie) & married surname.
I was ecstatic when I discovered exactly who she was about 1 yr ago as my aunt is still alive aged 88 yrs.
The 'aunt' was her mother's 1st cousin i.e. my aunt's 1st cousin, once removed.
Annie