Barend or (somewhat dated spelling) Barent is a Dutch male given name and occasional middle name.
 As of 2014, there are over than 4,000 men in the Netherlands with this as their first name, and nearly 3,000 with it as their middle name.
 It was likely derived from Bernard.
 Notable people with the name include:
Latvian names, like in most European cultures, consist of two main elements: the given name ("vārds") followed by family name ("uzvārds").
 During the Soviet occupation (1940 - 1991) the practice of giving a middle name was discouraged, but since the restoration of Independence Latvian legislation again allows giving of up to two given names and it has become more common to give a middle name to children.
Christopher Funk is an American musician and multi-instrumentalist best known as a member of the Portland, Oregon, indie rock band The Decemberists.
 He plays guitar, pedal steel, piano, violin, dobro, hurdy-gurdy, mandolin, saxophone, the theremin and many other instruments.
 According to Colin Meloy, as stated at the Pilgrimage Festival in Franklin, TN on September 27, 2015, Funk was originally given the middle name "Ryman" but a clerical error on his birth certificate resulted in his middle name being recorded as "Lyman."
Marion Christopher Barry was born in June 1980 to Marion Barry and Barry's third wife, Effi Slaughter Barry.
 He was their only child.
 His father had wanted to name him Marion Barry III, but Effi was strongly opposed, and they decided to give him the middle name Christopher instead.
 For most of his adult life, Barry went by his middle name, Christopher.
Nathan Smith Davis Sr., M.D., LLD (January 9, 1817 – June 16, 1904) was a physician who was instrumental in the establishment of the American Medical Association and was twice elected its president.
 He became the first editor of the "Journal of the American Medical Association".
Benjamin Oliver Davis Jr. (December 18, 1912 – July 4, 2002) was an American United States Air Force general and commander of the World War II Tuskegee Airmen.
Singh is a title, middle name or surname, which originated in India.
 Derived from the Sanskrit word for lion, it was adopted as a title by certain warrior castes in India.
 It was mandated by Guru Gobind Singh for all Sikhs.
 It was later adopted by several castes and communities.
 As a surname or a middle name, it is now found throughout the Indian subcontinent and among the Indian diaspora, cutting across communities and religious groups, becoming more of a title than a surname.
Benjamin Oliver Davis Sr. (1880 – November 26, 1970) was a United States Army officer.
 He was the first African-American to rise to the rank of general in the U.S. military.
 He was the father of Air Force General Benjamin O. Davis Jr.
In several cultures, people's names usually include one or more names in addition to the portion that is usually considered adequate to identify them.
 In a number of cultures where a given name is expected to precede the surname, such a name is likely to be placed after the given name and before the surname, and thus called a middle name.
 In English-speaking American culture, that term is often applied (arguably mistakenly) to names, occupying that position, even if the bearer would insist that that name is being mistakenly called a "middle name", and is actually (to mention several types of atypical cases):
Mable Robinson Simms, (born March 29, 1914, Cape Charles, Virginia, died January 27, 2005, Boston, Massachusetts) was an African American jazz pianist and singer, she performed with notable jazz musicians, also as Mabel Robinson, in the 1940-50's, including Louis Jordan, Sammy Price, Skeets Tolbert, Sammy Davis Sr., Roy Haynes, Pearl Bailey, The 4 Blackamours, and released another album on her own.
 She was born in Cape Charles, Virginia, raised in Norfolk and with her family, moved to Boston in 1931.
 Her voice was signatory for being remarkably capable in both the jazz and blues arenas and she was a talented pianist.
 This would land her guest singing roles with Sammy Price, Louis Jordan and Skeets Tolbert.

Question: What is the middle name of Benjamin O. Davis Sr.'s son?
Answer: Oliver