Princess Ruth gifted Kaʻiulani with land at Waikiki, from Honolulu, which combined with adjacent lands previously purchased in 1872 by Cleghorn to form ʻĀinahau. Her mother Likelike named it ʻĀinahau (cool place) after the cool winds blowing down from the Manoa Valley. Her father relocated the family to the country estate in 1878 when Kaʻiulani was three years old. Cleghorn planted a large botanical garden on the grounds of the estate, including a banyan tree, known as Kaʻiulani's banyan. Kaʻiulani's mother Princess Likelike died at age 36 on February 2, 1887, officially of unknown causes. Her doctors had believed in vain that she could have been cured with proper nourishment. Upon the death of her mother, when Kaʻiulani was eleven years old, she inherited the estate.