Mabel Gardiner Hubbard Bell, aeronautics financier, community leader, social reformer and advocate for the deaf (born 25 November 1857 in Cambridge, Massachusetts; died 3 January 1923 in Chevy Chase, Maryland). Bell actively supported and contributed to the work of her husband, inventor Alexander Graham Bell. Her financial investment in his work made her the first financier of the aviation industry in North America. She was a community leader in Baddeck, Nova Scotia, where the Bell family spent their summers. She was also a social reformer and supported innovation in education.
In 1875, the couple was engaged. On 11 July 1877, they were married in Cambridge, Massachusetts. Together, they had two sons and two daughters. Both boys died in infancy. The Bells lived in Washington, DC. Throughout their marriage, Mabel Bell actively supported her husband, who worked long hours as a researcher and an inventor. She offered financial and business advice throughout his career. She also managed the family’s finances.