His mother was High Chiefess Naiolaukea, also known as Naiolakea. (In ancient Hawaii, it was known for nobles to have many names.)
Keaunui married woman named Wehelani (Hawaiian: lani = "sky"), and their children were:
- High Chief Laakona of ʻEwa
- High Chiefess and "witch" Nuakea of Molokai
- High Chief and "wizard" Moʻi
Keaunui had a granddaughter, Chiefess Kapauanuakea of Molokai.
Keaunui ordered the cutting of one navigable channel.
- Patrick Vinton Kirch. A Shark Going Inland Is My Chief: The Island Civilization of Ancient Hawai'i; p. 118.
- Memoirs of the Bernice Pauahi Bishop Museum of Polynesian Ethnology and Natural History (1920).
- Kamakau, Samuel M., Ruling Chiefs of Hawaii (Revised Edition), Appendix Genealogies (Kamehameha Schools Press, Honolulu, Hawaii, 1961).
- Family of Maweke
- Patrick Vinton Kirch (2010). How Chiefs Became Kings: Divine Kingship and the Rise of Archaic States in Ancient Hawai'i.
- Kalākaua, 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
- Annual Report of the Hawaiian Historical Society. Hawaiian Historical Society, 1932.