Doctor Noonian Soong and Juliana O'Donnell went there in 2328 to get secretly married. Their wedding was witnessed by a Corvallen trader and a Klingon and their marriage certificate was kept at the Registrar's Office.
After 2328, in the chaos that ensued after the planetary government was overthrown, many documents, including the Soong marriage certificate were destroyed.
In 2370, in an effort to confirm then Doctor Juliana Tainer's story, Data was checking the passenger manifests of the period to see if she traveled to Malaya IV. This planet was mentioned in the commercial transport database archive of the USS Enterprise-D. (TNG: "Inheritance")
Lieutenant Paul Hickman had a routine physical on the planet and passed it "with flying colors" shortly before he was compelled by the DNA infection with the Tarchannen III species to return to Tarchannen III in 2367. (TNG: "Identity Crisis")