Carole Lombard was a second generation Baha'i who formally declared her membership of the Baha'i Faith in 1938. [Source: The Baha'i World 1940-1944, pp. 635. Baha'i Publishing Trust, Wilmette; URL: http://www.answers.com/topic/carole-lombard]
From: "Religious Affiliations of Celebrities" page in "Celebrity Religion" section of "Religion Facts" website (http://www.religionfacts.com/celebrities/religions_of_celebrities.htm; viewed 26 April 2007):
Below is an index of the religious affiliations or belief systems of celebrities (both living and dead; in film, television, music, literature, academics and politics), listed in alphabetical order by last name...
Celebrity: Carole Lombard
Religion/Belief: Baha'i Faith
Quotes, More Information, Sources:
The great actress and beloved of Clark Gable was a second-generation Baha'i. - The Baha'i World 1940-1944 (Baha'i Publishing Trust, Wilmette), p. 635.