President Bush -- It is customary to address ex-presidents as "president". You surely would not want to address him as just George Bush unless he is a personal friend. Governor Bush or even Mr. Bush would probably do.
George H. W. Bush used this phrase in a speech.
Coach baseball teams.
George Washington
He was elected. I'm not sure if that is what you want to know.
Why would you want to e-mail him in the first place
George W. Bush was born in July 6, 1946 and George H.W. Bush was born in June 12, 1924. P.S. I didn't write their exact ages, because I don't want the question to become out of date.
George did not want to be the president, he thought his leading days were over. But the 2nd continental congress disagreed. He then became president.
I'm pretty sure it was George Bush Sr. You can look him up if you want.
H.W. was not, mainly because he is to old and does not want to fly to Boston for a half a day. Walker was there, if that is was what you are asking.
During his presidency, President George W. Bush, made it clear that he did not believe in marriage equality for gay people. But as of 2013, he has not been asked that question again, so his current opinion is unknown.