Samuel Brannan in California Gold Rush
Samuel Brannan (1819-1889) was a Mormon elder who came to San Francisco in 1846 in hopes of building a new Mormon settlement there. In 1848, Brannan became the most enthusiastic and successful promoter of "gold fever," making a fortune by selling supplies to miners.
Brannan became California's first millionaire and was excommunicated from the Mormon Church after he refused to share his new fortune with the Latter-Day Saints.
That'll do it.