Origins & Early Life

Christine Ladd-Franklin (December 1, 1847 – March 5, 1930) was an American psychologist, logician, and mathematician. Christine Ladd, sometimes known by the nickname "Kitty", was born on December 1, 1847, in Windsor, Connecticut, to Eliphalet, a merchant, and Augusta (née Niles) Ladd. During her early childhood, she lived with her parents and younger brother Henry (born 1850) in New York City. In 1853 the family moved back to Windsor, Connecticut, where her sister Jane Augusta Ladd McCordia was born the following year.

Pivotal Works & Achievements

Family correspondence shows that Augusta and one of her sisters were both staunch supporters of women's rights. Before Ladd turned five, her mother had taken her to a lecture given by Elizabeth Oakes Smith, a well-known proponent of women's rights. Additionally, her father was a graduate professor who was supportive of his eldest daughter's education. Following the death of her mother in spring 1860 of pneumonia, Ladd went to live with her paternal grandmother in Portsmouth, New Hampshire, where she attended school. Ladd's father remarried in 1862 and had two further children, her half-sister Katherine (born 1862) and half-brother George...

Enduring Legacy & Impact

The historical impact and works continue to influence the modern world.

Contemporary Figures & Related Historical Timelines

• Alexander Graham Bell — Contemporary (Born in 1847) (1847): Pioneering inventor credited with patenting the first practical telephone.
• Alexandre Brongniart — Contemporary (Died in 1847) (1847): Pioneering French scientist in chemistry, geology, and mineralogy.
• Annie Besant — Contemporary (Born in 1847) (1847): Activist, writer, and Theosophist championing social reform and self-rule.
• Alfred von Tirpitz — Contemporary (Died in 1930) (1930): Architect of the modern German battle fleet and naval expansionist.
• Alfred Wegener — Contemporary (Died in 1930) (1930): Pioneering geophysicist known for proposing the theory of continental drift.
• Ali al-Sistani — Contemporary (Born in 1930) (1930): Leading Twelver Shia Islamic scholar and Grand Ayatollah of Najaf, Iraq.
• Aleister Crowley — Shared historical date (12-01 · Died) (1947): Founder of Thelema, a major occultist, poet, and ceremonial magician.
• Alfred Thayer Mahan — Shared historical date (12-01 · Died) (1914): Pioneering American strategist whose work defined modern sea power doctrine.
• Alessandro Volta — Shared historical date (03-05 · Died) (1827): Pioneering Italian physicist, credited with the electric battery and electrochemistry.
• Allan Nevins — Shared historical date (03-05 · Died) (1971): Pioneering American historian known for Civil War studies and business history.
• 1847 Historical Timeline & Archive — Explore world events and figures from 1847
• December 1 (12-01) On This Day — Historical birthdays and events on December 1
• 1930 Historical Timeline & Archive — Explore world events and figures from 1930
• March 5 (03-05) On This Day — Historical events and memorials on March 5