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Dr. Billy Graham
Yes, someone with a DPhil degree is typically referred to as "Dr" in an academic context. The DPhil is a doctoral degree, and holders are entitled to use the title of "Dr" as a courtesy.
She went to graduate school to obtain her doctoral degree.
YES ... Billy Graham paid bail money to secure the release of Dr. Martin Luther King, Jr...
"Tertiary degree" is just another way of saying "Doctoral Degree" It means the third degree, where Bachelor's is the first and Master's is the second. Tertiary is NOT ONLY doctoral degree. It is any degree after higher secondary school. This includes Bachelors and masters degree too.
The abbreviation is not gender specific. It is the same for both male and female. In other words, Dr. Mary Smith, or Dr. John Smith.
Buzz Aldrin has a PhD. His doctoral thesis was on orbital rendezvous techniques, as such his fellow astronauts called him "Dr. Rendezvous"
Fisher is a fairly common last name in English-speaking countries and a number of Fishers have earned a doctoral degree. You will need to be more specific about which Dr. Fisher you are asking about.
Dr. Phil McGraw is a Psychologist, not an MD. He has a doctoral degree in psychology, not medicine. Having earned his PhD he is entitled to the title of Doctor.
No He did not die, as of January 2016, Dr Billy Graham is still among the living, having now lived 97 years here below. I am sure he is looking forward the grand meeting with his Savior, Jesus Christ and also his reunion with his wife Ruth, who passed away in 2007.
Dr. Miles Munroe Billy Graham
Billy Graham is a Protestant and saints are primarily from the Catholic Church. In the unlikely event that he should convert to Catholicism, he would have to be dead a minimum of 5 years before a case could be opened unless an exception is granted by the pope