| Louisa Thiers | |
 Louisa Thiers at the age of 111. | |
| Birth: | 2 October 1814 Whitesboro, Oneida, New York, USA |
| Death: | 17 February 1926 Milwaukee, Wisconsin, USA |
| Age: | 111 years, 138 days |
| Country: |  USA
|
| Validated | |
Louisa Kirwan Thiers (née Capron; 2 October 1814 — 17 February 1926) was an American verified supercentenarian. She was born as Louisa Capron in Whitesboro, Oneida County, New York. Her parents were Seth (a Revolutionary War veteran) and Eunice Capron. Eunice was 47 when Louisa was born. She had four older brothers and one older sister. In the 1830s, she and her family moved to Kenosha, Wisconsin. She moved to Milwaukee in 1850.
On 6 April 1847, she married David Bodine Thiers. The couple had five children in total, of which one died as an infant. David died in 1888. She was an advocate for women’s emancipation.
At 106, she could still read and write letters by hand.
At 108, she could recall the opening of the Erie Canal, riding one of the first steam railways in New York, and seeing Halley’s comet two times. She was also interested in current events. She attributed her longevity to a moderate diet, lots of sleep, exercise, keeping interest in life and being happy/making others happy. At age 111, she stated that ”you can’t mix love and a career” and that ”motherhood is one of the biggest blessings that can come to any woman”.
Thiers died on 17 February 1926, at the age of 111 years, 138 days. She was the oldest person ever and the first person to reach age 111. Delina Filkins surpassed her record the same year.