Mentioned in biographical sketch of half-brother R. Graves Martin, Volume II, p. 525. "Isaiah L. Martin. . . who is prominently known throughout Southwestern Texas as Judge Martin, having served as district judge for a number of years, in addition to representing his district in the state legislature."
A Twentieth Century History of Southwest Texas Illustrated 1907.
Obituary, "Former District Judge I.L. Martin Died at Uvalde," 5/20/1938, p. 10. "Judge Martin was born at Seguin and educated at San Antonio. He went to Bracketville in the late seventies, serving as county attorney and county judge, and one term in the twenty-fourth legislature."
Corsicana Daily Sun .