Ka`ahumanu, was born on the island of Maui in 1772, commemorating on the date of March 17 and was the favorite queen of Kamehameha I.
Her mother was Namahanaikaleleokalani and her father was Ke`eaumoku Papa`iahiahi. Early in life she was betrothed to Kamehameha I, whom her father had served as counselor. They married and she supported him in his efforts to unite the islands of the archipelago under his central authority and shared largely in their governance.
After Kamehameha's death in 1819, Ka`ahumanu became Kuhina nui (premier) to his successor, Liholiho Kamehameha II, and instigated many reforms. She worked in particular to overcome the taboos placed on women
(ai kapu), in persuading Kamehameha II to eat publicly with women.
She was encouraged by the Protestant missionaries from New England who began arriving in 1820 and learned to read and write from them.
When Liholiho went to England in 1823, he had died there with his queen, Kamamalu. Ka`ahumanu was appointed regent until Kauikeaouli, (Kamehameha III) should come of age. She worked closely with the Christian missionaries and was baptized in 1825, along with her sister, Namahana Pi`ia and her husband, Gideon Peleioholani La'anui who was Kamehameha's nephew. She traveled much among the islands, promoting the evangelizing and educational work of the missionaries.
Ka`ahumanu passed away on June 5, 1832