No
Tony Blair, born May 6, 1953 is a British politician, a former leader of the the Labour Party, and Prime Minister of the UK 1997-2007. As of 2009, he is a peace envoy to the Middle East. In January...
from wikpedia "Selma Blair Beitner in Southfield, Michigan,[1] the daughter of Molly Ann, a judge,[2] and Elliot Beitne"
No, he is still alive.
No. Gordon Brown is the first British prime minister with a Ph.D. (Note that until quite recently the PhD was considered rather alien).