There's a Lelon O. MARTIN, age 22, b. AR, in the 1930 census for Bell, Los Angeles Co, CA with wife Hattie A., age 24, b. AR and daughter Loudden, age 1, b. CA.Lelon lists his parents' birth places as AL and TX, which is what is listed for David and Ellen in the 1920 census.
They are in San Antonio, Los Angeles Co, CA in 1920 with children Lea Ella, age 12, and Leon, age 7.Lelon is spelled Leland.
There's a CA death index listing for Lelon Otis MARTIN b. 16-Dec-1907 in AR, died 15-Apr-1989 in San Bernardino, CA.Mother's maiden name was HALL.
There's a CA death index listing for Leonard Duffy MARTIN b. 17-Jan-1909 in AR, died 15-Nov-1985 in Los Angeles, CA.Mother's maiden name was HALL.
There's a possible match in 1940 in San Antonio, Los Angeles Co, CA:Leonard MARTIN, age 30, b. AR, wife Mary, age 29, b. AZ, children Ralph, age 7, and Charlotte, age 6.