Alfred Daniel Williams King
Alfred Daniel Williams King (July 30, 1930 – July 21, 1969), known as A. D. King, was the younger brother of Martin Luther King, Jr., the famed leader of the American civil-rights movement. A. D. King was a Baptist minister and a civil rights activist.
Alfred King was born July 30, 1930, in Atlanta, Georgia. He was a son of Reverend Martin Luther King, Sr., and Alberta Williams King, the youngest of their three children (the other two being Willie Christine, born September 11, 1927, and Martin Luther King, Jr., born January 15, 1929). In contrast to his peacemaking brother, Martin, A. D.—according to his father—was “a little rough at times” and “let his toughness build a reputation throughout our neighborhood”  p.126. Less interested in academics than his siblings, A. D. started a family of his own while still a teenager. He was married on June 17, 1950, to Naomi Ruth Barber (born 1932), with whom he had five children: Alveda, Alfred II (d), Derek I, Darlene (d), and Vernon (1960–2009).
Although as a youth A. D. had strongly resisted his father’s ministerial urgings, he eventually began assisting his father at Ebenezer Baptist Church. In 1959, A. D. King graduated from Morehouse College. The same year, he left Ebenezer Baptist to become pastor of Mount Vernon First Baptist Church in Newnan, Georgia.
Involvement in the civil-rights movement 
Alfred King was arrested along with King, Jr., and 70 others while participating in an October 1960 lunch-counter sit-in in Atlanta. In 1963, A. D. King became a leader of the Birmingham campaign, while pastoring at First Baptist Church of Ensley in Birmingham, Alabama. On May 11, 1963, King’s house was bombed. In August, after a bomb exploded at the home of a prominent black lawyer in downtown Birmingham, outraged citizens, intent on revenge, poured into the city streets. While rocks were being thrown at gathering policemen and the situation escalated, A. D. King climbed on top of a parked car and shouted to the rioters in an attempt to quell their fury: “My friends, we have had enough problems tonight. If you’re going to kill someone, then kill me. . . Stand up for your rights, but with nonviolence.” Like his brother, A. D. was a staunch believer in the importance of maintaining nonviolence in direct-action campaigns. However, unlike his brother, A. D. remained mostly outside the media’s spotlight. As one of his associates said, “Not being in the limelight never seemed to affect him, but because he stayed in the background, many people never knew that he was deeply involved, too”.
Later life, and death 
For the last part of his life, he was afflicted by alcohol and depression. In 1965, King moved to Louisville, Kentucky, where he became pastor at Zion Baptist Church. While there, King continued to fight for civil rights and was successful in a 1968 campaign for an open-housing ordinance. After his brother's assassination in April 1968, there was speculation that A. D. might become the president of the Southern Christian Leadership Conference (SCLC). A. D., however, made no effort to assume his deceased brother’s role, although he did continue to be active in the Poor People's Campaign and in other work on behalf of SCLC.
After the death of Martin, A. D. King returned to Ebenezer Baptist Church, where in September 1968 he was installed as co-pastor. He was praised by his father as “an able preacher, a concerned, loving pastor.”
On July 21, 1969, nine days before his 39th birthday, A. D. King was found dead in the swimming pool at his home after a long bout with alcohol and depression. The cause of his death was listed as an accidental drowning.
His father, Martin Luther King, Sr., said in his autobiography, "Alveda had been up the night before, she said, talking with her father and watching a television movie with him. p.192 He'd seemed unusually quiet...and not very interested in the film. But he had wanted to stay up and Alveda left him sitting in an easy chair, staring at the TV, when she went off to bed... I had questions about A.D.'s death and I still have them now. He was a good swimmer. Why did he drown? I don't know -- I don't know that we will ever know what happened." Naomi King, the widow, said, "There is no doubt in my mind that the system killed my husband."
- Daddy King An Autobiography. Morrow. 1980. ISBN 978-0-688-03699-7. OCLC 6422326.
- "Alabama, 1963: The Heart of Civil Rights in America". New York Times. 7/10/2011.
- "Bomb Hits Home in Birmingham". New York Times. 1963-08-01.
- "A Rights Activist". Thomas A. Johnson, New York Times. 1969-07-22.
- Taylor Branch (4 September 2010). "Dr. King’s Newest Marcher". New York Times. Retrieved 9 September 2010.
- "The Rev. A. D. Williams King". Time. 1969-08-01. Retrieved 2007-11-01.
- "Introduction in Papers". Introduction in Papers 1:26; 43.
- "Daddy King". King, Sr., with Riley. 1980.