Harold Kainalu Long Castle
Large landowner, real estate developer, and philanthropist in Hawaii; founder of Kaneohe Ranch
About Harold Kainalu Long Castle
Lived 1886 – 1967 (aged 81). Harold Kainalu Long Castle was an American.
Harold Kainalu Long Castle (July 3, 1886 – August 19, 1967) was a landowner, real estate developer, and later a philanthropist in Hawaii.
Life Harold Kainalu Long Castle was born July 3, 1886, in Honolulu. Castle was the son of wealthy landowner James Bicknell Castle and Julia White, and grandson of Castle & Cooke founder Samuel Northrup Castle and philanthropist Mary Tenney Castle. In 1917, he purchased almost of land on the windward side of the island of Oahu, in what was then the ahupuaa of Kailua, to establish his sprawling Kaneohe Ranch.
In 1962, he set up the Harold K.L. Castle Foundation, which remains the largest private foundation based in Hawaii.
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Important facts
People in Harold Kainalu Long Castle's life
Named in this biography and alive at the same time
Contemporaries
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Frequently asked questions
Who was Harold Kainalu Long Castle?
large landowner, real estate developer, and philanthropist in Hawaii; founder of Kaneohe Ranch
When was Harold Kainalu Long Castle born?
Harold Kainalu Long Castle was born on 3 July 1886 in Honolulu.
When did Harold Kainalu Long Castle die?
Harold Kainalu Long Castle died on 19 August 1967 in Kailua.
What nationality was Harold Kainalu Long Castle?
Harold Kainalu Long Castle was American.
Sources & further reading
· Wikipedia: Harold Kainalu Long Castle
· DBpedia: Harold Kainalu Long Castle
Cite this page
APA: Biography.guide. (2026). Harold Kainalu Long Castle. https://biography.guide/harold-kainalu-long-castle/
MLA: "Harold Kainalu Long Castle." Biography.guide, https://biography.guide/harold-kainalu-long-castle/.
Chicago: "Harold Kainalu Long Castle." Biography.guide. https://biography.guide/harold-kainalu-long-castle/.
Data last updated: 2026-09-22 · Spot an error? Report a correction.
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