William F. Hooley (16 April 1861 – 12 October 1918) was a British-born American bass singer and pioneer recording artist who was popular as a solo singer, as a monologist, and as a member of several of the most successful vocal groups of the early twentieth century, including The Haydn Quartet and The American Quartet.
The Paul Robeson House was the home of internationally renowned American bass-baritone concert singer, actor of film and stage, All-American and professional athlete, writer, multi-lingual orator, human rights activist, and lawyer Paul Robeson from 1966 until 1976.
 Located in West Philadelphia, the Robeson House produces, presents and promotes traveling lectures, concerts and exhibits so that learning about Robeson is accessible to all ages and cultures.
Nicholas E. Macioci (September 19, 1927 – December 24, 2000), known as Nick Massi, was an American bass singer and bass guitarist for The Four Seasons.
Paul Leroy Robeson (pronounced ; April 9, 1898 – January 23, 1976) was an American bass singer and actor who became involved with the Civil Rights Movement.
 At Rutgers College, he was an outstanding American football player, and then had an international career in singing, with a distinctive, powerful, deep bass voice, as well as acting in theater and movies.
 He became politically involved in response to the Spanish Civil War, fascism, and social injustices.
 His advocacy of anti-imperialism, affiliation with communism, and criticism of the United States government caused him to be blacklisted during the McCarthy era.
Paul Robeson - Speak of Me As I Am is a 1998 documentary video directed by Rachel Hermer.
 It is a co-production of BBC Wales/New Jersey Public Television series produced by Richard Trayler-Smith and Max Pugh, about the life of singer, actor and activist, Paul Robeson.
 It features rare extensive archival footage of Robeson in the former Soviet Union, including footage of Robeson at Yalta with Nikita Khrushchev and many of Robeson's homes and landmarks as they look today.
 There are also interviews with Robeson's two main biographers, Lloyd Brown and Martin Duberman.
 As of 2009, "Paul Robeson - Speak of Me As I Am" is the most extensive documentary on Paul Robeson that the BBC has ever been involved with.
Richard Anthony Sterban (born April 24, 1943) is an American bass singer born in Camden, New Jersey, who joined the country and gospel quartet The Oak Ridge Boys in 1972.
 Prior to joining The Oak Ridge Boys, Sterban toured with J. D. Sumner and the Stamps Quartet, who were singing backup for Elvis Presley at that time.
 Sterban ultimately became best known for his "oom-pa-pa-oom-pa-pa-mow-mow" bass solo in the Oak Ridge Boys' 1981 single "Elvira" and sang lead vocals on a select few of the group's songs, including a cover of The Righteous Brothers' hit "Dream On," which itself became a hit.
Here I Stand is a 1958 book written by Paul Robeson with the collaboration of Lloyd L. Brown.
 While Robeson wrote many articles and speeches, "Here I stand" is his only book.
 It has been described as part manifesto, part autobiography.
 It was published by Othello Associates and dedicated to his wife Eslanda Goode Robeson.
Ryan Allen is an American bass singer best known for his work in opera.
 He has performed professionally in all 50 states, appeared with numerous American opera companies, and sung as a soloist in Russia, Israel, Poland, Norway and Sweden.
Gene McDonald is an American bass singer and was the bass vocalist for the Florida Boys southern gospel quartet from 1998-2007.
Eslanda ("Essie") Cardozo Goode Robeson (December 15, 1895 – December 13, 1965) was an American anthropologist, author, actor and civil rights activist.
 She was the wife and business manager of singer and actor Paul Robeson.

Question: Which American bass singer and actor was married to Eslanda Goode Robeson?
Answer: Paul Robeson