The only stars I know of officially named after people are Sualocin and Rotanev, named after Nicolaus Rotanev (an early 19th century Italian astronomer),
and also Regor (also called Suhail) and Navi, otherwise Roger (Chafee) and Ivan, the middle name of Gus Grissom;
these last two names were included in official NASA maps by Grissom as a practical joke, and remain in use in many places as a kind of memorial since their deaths. http://www.space.com/spacewatch/star_names_030829.html
I’m sure I read this in BadAstronomer’s book, Bad Astronomy, but it seems there are people who buy this certificate and then take it to an observatory asking to be able to see “their” star. It is not always a pleasant experience, especially when they bought a star to name after a recently deceased relative.