Louisa Barnes Pratt | |
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| Born | November 10, 1802 |
| Died | September 8, 1880 (aged 77) |
| Spouse | Addison Pratt |
Louisa Barnes Pratt (November 10, 1802 – September 8, 1880) was a prominent advocate for women's vote and other related causes in the 19th century as well as a Latter-day Saint missionary.