Mary Ellen "Mammy" Pleasant was born a slave on a plantation near Augusta, Georgia. She became an important western terminus of the underground railroad in San Francisco during the 1850s. By placing maids and servants throughout the homes of San Francisco's rich, she came to wield (secret) power among San Francisco's elite.
When Mary Ellen was 10, her mother gave her the name of her white plantation-owning father, and also disclosed that Mary Ellen was descended from a succession of Voodoo Queens of Santo Domingo. A year later, Mary Ellen was sold to a man in New Orleans, Americus Price, and he decided to place her in a convent where she would be educated, and eventually freed. Later he sent her to live with friends in Cincinnati, since her educated intelligence would have eventually betrayed her in the antebellum South.
Mary Ellen's life took her in and out of various families and situations in New England and Virginia. She married James W. Smith, a Virginia plantation-owner and abolitionist. Throughout the late 1830s and early 1840s Mr. and Mrs. Smith smuggled hundreds of slaves to Canada as couriers along the Underground Railroad. When Smith died in 1844, Mary Ellen continued to outrage southern planters by helping scores of slaves to escape.
Things became too hot and Mary Ellen made her way first to New Orleans where Marie Laveau, the voodoo queen, deeply impressed Mary Ellen with her social power among all levels of New Orleans society. Mary Ellen stayed in New Orleans for a few months and learned about the practice of voodoo from Marie Laveau, though she didn't plan to copy Laveau's version exactly. By 1852, Louisiana planters were urgently searching for Mary Ellen Pleasant as the crafty intrigante who would stop at nothing in smuggling slaves through the Underground.
She sometimes visited plantations dressed as a jockey, other times as a shabby man on a delivery wagon. After getting trained as a cook, Mary Ellen found a job on a local plantation, right under the noses of the local gentry. Overhearing speculation about her origins one night, Mary Ellen made a hasty escape, and took the four-month sea journey around Cape Horn, arriving in San Francisco on April 7, 1852. On the journey she met a Scottish fellow named Thomas Bell, over whom she would maintain a powerful influence throughout the next three decades, as they both became millionaires speculating on mining and banking interests. By her death in 1904, Mammy had lost most of her fortune, and a good deal of Thomas Bell's as well.
Thomas Bell became a director of the all-powerful Bank of California and Mammy was his closest (and secret) advisor. Meanwhile, she bought and sold dozens of properties, running boarding houses and specializing in developing "proteg's" (i.e. beautiful young women) whom she would endeavor to marry off to the nouveau riche miners and bankers that frequented her boarding houses. She also built a house, then far out of town, known as the "Geneva Cottage," at the corner of the San Jose road and Geneva (now the corner of Geneva and Bayshore Boulevard near the toxic wasteland of the Southern Pacific railyards and the Brisbane lagoon), which was the infamous site of numerous wild bacchanalian parties, attended by wealthy San Franciscan men and a bevy of beautiful young women.
The mysterious death of one young woman at the Geneva Cottage led to a consolidation of Mammy's influence as she collected blackmail from the attendees to keep quiet the circumstances of her death. Other associates of Mammy also died mysteriously, often after trying to turn the blackmailing tables on Mammy, but she was never accused, tried, or convicted of any such crime.
Her lust for power was pursued through several primary techniques: she continued to sponsor runaway slaves as hundreds arrived in SF thanks to her aid. These people she placed in businesses and homes of the city, and they became her ears on the town. She sponsored and housed a number of young women, many of whom continued to follow her wishes for years. She spent a lot of her large fortune on the poor and destitute, earning considerable good will and power. She also used her position as madame to gain control through blackmail over many of the richest men in San Francisco, even helping them dispose of various children their dalliances gave rise to. And finally, Mary Ellen "Mammy" Pleasant used her talent with the voodoo religious rites to control her followers through religious terror.