Keaunui (Hawaiian for "Keau the Great") was a High Chief of ʻEwa, Waiʻanae and Waialua in ancient Hawaii.Patrick Vinton Kirch. A Shark Going Inland Is My Chief: The Island Civilization of Ancient Hawai'i; p. 118. He was a member of the Nanaulu line and is also known as Keaunui-a-Maweke.Memoirs of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History (1920).
His mother was High Chiefess Naiolaukea, also known as Naiolakea.Kamakau, Samuel M., Ruling Chiefs of Hawaii (Revised Edition), Appendix Genealogies (Kamehameha Schools Press, Honolulu, Hawaii, 1961). (In ancient Hawaii, it was common for nobles to have many names.)
His father was a high chief and “wizard” called Maweke, an Aliʻi of "the blue blood".
He had brothers named Mulielealiʻi and Kalehenui.Patrick Vinton Kirch (2010). How Chiefs Became Kings: Divine Kingship and the Rise of Archaic States in Ancient Hawai'i.
Keaunui married a woman named Wehelani (Hawaiian: lani = "sky"), and their children were: High Chief Laakona of ʻEwa High Chiefess and "witch" Nuakea of MolokaiKalākaua, His Hawaiian Majesty. The Legends And Myths of Hawaii: The Fable and Folk-lore of a Strange People. Tokyo, Japan: Charles E. Tuttle Company Inc. of Rutland, Vermont & Tokyo Japan, 1972.Native Planters in Old Hawaii: their life, lore, and environment; by Edward Smith Craighill Handy; Elizabeth Green Handy; Mary Kawena Pukui. Honolulu, 1972 High Chief and "wizard" Moʻi
Keaunui had a granddaughter, Chiefess Kapau-a-Nuʻakea of Molokai.
Keaunui is traditionally credited with opening a navigable channel at Pearl Harbor.Annual Report of the Hawaiian Historical Society. Hawaiian Historical Society, 1932.
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