Question: Who is the half-brother of the man whose mother was also known as M. Bible?
Related documents: [0]  [DOC] Jon Garth Murray (November 16, 1954 – September 29, 1995) was the second son of late controversial activist Madalyn Murray O'Hair, the first president and founder of American Atheists, Inc., in 1963. He was also the half-brother of the reverend William "Bill" Murray. [END] 
[1]  [DOC] Madalyn Murray O'Hair ("née" Mays; April 13, 1919 – September 29, 1995), who also used multiple pseudonyms (her most preferred being M. Bible), was an American activist, founder of American Atheists, and the organization's president from 1963 to 1986. She created the first issues of "American Atheist Magazine". One of her sons, Jon Garth Murray, became the nominal president of the organization from 1986 to 1995, but she remained "de facto" president during these nine years. [END] 
Answer: 
William "Bill" Murray
William "Bill" Murray