Tubman was born Araminta "Minty" Ross to slave parents, Harriet ("Rit") Green and Ben Ross. Rit was owned by Mary Pattison Brodess (and later her son Edward). Ben was held by Anthony Thompson, who became Mary's second husband, and who ran a large plantation near Blackwater River in Madison, Maryland. As with many slaves in the United States, neither the exact year nor place of Araminta's birth is known, and historians differ as to the best estimate. Kate Larson records the year as 1822, based on a midwife payment and several other historical documents, including her runaway advertisement, while Jean Humez says "the best current evidence suggests that Tubman was born in 1820, but it might have been a year or two later. " Catherine Clinton notes that Tubman reported the year of her birth as 1825, while her death certificate lists 1815 and her gravestone lists 1820. In her Civil War widow's pension records, Tubman claimed she was born in 1820, 1822, and 1825, an indication, perhaps, that she herself had only a general idea of when she was born.