Presidential namesake

One of the new grad students in my current group has the same last name as a former US president (from the 20th century, now deceased), although I am not sure if they are related. There might be a chance though, given that she attended the same highly selective university (for undergrad) as him, hailed from the same state, and that the surname is quite rare in this country.

No Secret Service agents hanging around though, and I doubt federal protection will cover the great-grandchildren.

Hmm...I will ask soon, once I get an opportunity to do so.

Edit (9.30pm): Turns out she is not.