Wikipedia is good for finding dates of birth, but anything else is suspect
It's not bad on non-politically-charged science and technology. But anything politically relevant is biased to the point of doubtful use.
I was an early contributor to Wikipedia. After a while I became very disillusioned and gave it up, and I wiped all personal information from my user page. It had become a liability.
I use it to get background information on old movies and actors. For the most part, there is little political content for that, and the format Wiki uses is more informative than IMBD, which would be the other major source for that type of content.