His siblings included the following:
Rev. Isaac Julian, 1879-1947 (m. Eula Lambert)
Dallas H., 1883-1948 (m. Lizzie Prestridge, 1884-1942)
John Friley, 1886-1942, (m. Anna Pearl Keenan, 1892-1993)
Rev. James Heard, 1889-1941 (m. Alicia Reitzell, 1895-1961)
Leonidas married Lillie Elouise Randall who was born on January 15, 1882 to the marriage of John Hiram Randall and Emily Wainwright. Elouise's first cousin was John Calvin Randall who married Mary Frances Price. John Calvin Randall's father, William Harmon, was a brother to John Hiram.
Leonidas died on July 23, 1948 and Elouise died on December 7, 1963. Both are buried in the Old Pine Hill Cemetery in Sicily Island, Catahoula Parish, Louisiana.
The following children were born to the marriage of Reverend Leonidas Hill Brooks and Lillie Elouise Randall:
Aubrey Leonidas, 1908-1980 (m. Thelma Mitchell, 1908-1995)Aubrey Brooks served the Catahoula Parish school system for forty-two years. His first ten years of service were spent as a teacher, principal, coach and supervisor. He served as the Catahoula Parish Superintendent of Education for the remaining thirty-two years.
Rev. Kerfoot Graves, 1911-1992 (m. Grace Chandler, 1916-1988)
Ann Hasseltine, 1912-2006 (m. Freeman Cornelius DeBoe, 1906-1992)
John Madison, 1914-1994 (m. Nelda Nobles, 1918-2000)
Rev. Richard Shadrack, 1922-1993 (m. Bessie Marie Little, 1922-1993)
Rev. Paul Elkins, 1924-2005 (m. Allie Glynne Ingram, 1924-2012)
Julian Dodd, 1918-1998 (m. Sibyl Louise Wurster, 1991-?)
Other areas of service included membership on the AASA Executive Council of Louisiana Teachers Association, two terms as president of the Fifth District School Superintendents Association, and membership in the Sicily Island Rotary Club.
He and his wife, Thelma, made their home in Sicily Island where they raised three children; Pat, Craig and Nan.
Aubrey Leonidas Brooks died on May 7, 1980. Thelma Mitchell Brooks died on September 6, 1995. Both are entombed in the Highland Park Cemetery in Sicily Island, Catahoula Parish, Louisiana.