On 1 March 1924, when Benjamin Hezekiah was 44 years old, his father (William Cooley Smith) died at the age of 69 in Blackwell.
Nellie Mattie died when she was about 50 years old in 1932. Benjamin Hezekiah was about 52 years old at the time.
William Murphy died when he was 42 on 31 October 1936 in Pampa, Gray, Texas, United States. Benjamin Hezekiah was 56 years old at the time.
On 24 February 1948, when Benjamin Hezekiah was 68 years old, Derrett Cooley died at the age of 71 in Houston, Harris, Texas, United States.
Louie Foster died when he was 77 years old on 10 February 1956 in Pasadena, Harris, Texas, United States. Benjamin Hezekiah was 75 years old at the time.
When Benjamin Hezekiah was 83 years old, his wife (Mattie Ann Elizabeth Atchinson) died at the age of 81 on 18 January 1964 in Hobbs, Lea, New Mexico, United States. They had been married 58 years.
Benjamin Hezekiah died at the age of 84 on 1 August 1964 in Los Angeles, Los Angeles, California, United States. He was buried later that month at Roosevelt Memorial Park, which is located at 18255 South Vermont Avenue in Gardena, Los Angeles, California, United States.
After his death, Benjamin Hezekiah’s baptism ordinance was completed, by proxy, on 9 July 1992 in The Church of Jesus Christ of Latter Day Saints’ Jordan River Utah Temple, which is located at 10200 1300 Wes in South Jordan, Salt Lake, Utah, United States. He was sealed, by proxy, to his parents (William Cooley Smith and Mary Virginia Collins) and to his wife on 11 July 1992 in the same temple.