The unification of the Hawaiian islands is a legendary story, filled with prophecy, myths, battles and conquest. I will provide a historical time line and some academic sources to tell the story more completely. With myth and legend, it is often best to glean information about the story from multiple source.

Here is the time-line.

https://www.timetoast.com/timelines/hawaii-unification

Here is a list of conflicts from the unification period;

https://en.wikipedia.org/wiki/List_of_conflicts_in_Hawaii

Unification of Hawaiʻi (1782–1810)

• Battle of Keawawa (1738)
• Battle of Waikapu Commons (1776)
• Battle of Moku’ohai (1782)
• Olowalu Massacre (1790)
• Battle of Kepaniwai (1790)
• East Hawaiʻi Battles of 1790 (1790)
• Battle of Kawaihae (1791)
• Battle of Nu’uanu (1795)

The entire unification story of Hawaii, can be summed up by telling the story of King Kamehamhea I’s life story.

https://en.wikipedia.org/wiki/Kamehameha_I#Unification_of_Hawai%CA%BBi

• Ahlo, Charles; Walker, Jerry; Johnson, Rubellite Kawena Kenney (2000). Kamehameha’s Children Today. Native Books Inc. ISBN 9780996780308. OCLC 950432478.
• Alexander, W.D. (1912). “Birth of Kamehameha I”. Annual Report of the Hawaiian Historical Society. Honolulu: Hawaiian Historical Society. ASIN B01N6XLV7T. hdl:10524/11853.
• Archer, Seth (2018). Sharks upon the Land: Colonialism, Indigenous Health, and Culture in Hawai’i, 1778–1855. Cambridge University Press. ISBN 978-1-316-80064-5. OCLC 1037875231.
• Choris, Louis (1822). Voyage pittoresque autour du monde. Paris : F. Didot. OCLC 11888260.
• Chun, Malcolm Naea (2007). Ho`omana: Understanding the Sacred and Spiritual. Curriculum Research & Development Group, University of Hawaii. ISBN 978-1-58351-047-6.
• Desha, Stephen; Frazier, Frances N. (2000). Kamehameha and His Warrior Kekūhaupiʻo. Kamehameha Schools Press. ISBN 978-0873360562. OCLC 44114603.
• Dibble, Sheldon (1843), History of the Sandwich Islands, Honolulu: Press of the Mission Siminary, ASIN B06XWQZFY3, OCLC 616786480
• Fornander, Abraham; Stokes, John F.G. (1880). An Account of the Polynesian Race: Its Origins and Migrations, and the Ancient History of the Hawaiian people up to the time of Kamehameha I. II. Trubner And Co., Ludgate Hill. ASIN B008FSJAGY. ISBN 978-1-330-05721-6. OCLC 4888555.
• Gowen, Herbert Henry (1919). The Napoleon of the Pacific: Kamehameha the Great. Fleming H. Revell Company . ISBN 978-1371128616.
• Gast, Ross H. (1973). Don Francisco De Paula Marin: The Letters and Journals of Francisco De Paula Marin. Hawaiian Historical Society. ISBN 978-0824802202. OCLC 477674224.
• ʻĪʻī, John Papa (1983). Fragments of Hawaiian History (2 ed.). Honolulu: Bishop Museum Press. ISBN 978-0-910240-31-4. OCLC 6849173.
• Kamakau, Samuel (1992) [1961]. Ruling Chiefs of Hawaii (Revised ed.). Honolulu: Kamehameha Schools Press. ISBN 0-87336-014-1.
• Kanahele, George H. (1986), Pauahi: The Kamehameha Legacy, Kalihi: Kamehameha Schools Press, ISBN 978-0873360050
• Klieger, P. Christiaan (1998). Moku’ula: Maui’s sacred island. Honolulu: Bishop Museum Press. ISBN 1-58178-002-8.
• Kuykendall, Ralph Simpson (1965), The Hawaiian Kingdom, 1778 – 1854, Foundation and Transformation, University of Hawaii Press, ISBN 978-0870224317, OCLC 47008868
• Liliʻuokalani, Queen; Forbes, David W. (2013). Hawaii’s Story by Hawaii’s Queen Liliʻuokalani (annotated edition). Hui Hānai. ISBN 9780988727823. OCLC 869268731.
• Morrison, Susan (2003). Kamehameha: The Warrior King of Hawai’i. University of Hawaii Press. ISBN 978-0824827007.
• Mookini, Esther T. (1998). “Keopuolani: Sacred Wife, Queen Mother, 1778-1823” (PDF). 32. Honolulu: Hawaiian Historical Society. ASIN B002T9NQT2. hdl:10524/569.
• Potter, Norris Whitfield; Kasdon, Lawrence M.; Rayson, Ann (2003). History of the Hawaiian Kingdom. Bess Press. ISBN 978-1-57306-150-6. OCLC 131810736.
• Pratt, Elizabeth Kekaaniauokalani Kalaninuiohilaukapu (1920). History of Keoua Kalanikupuapa-i-nui: Father of Hawaii Kings, and His Descendants, with Notes on Kamehameha I, First King of All Hawaii. T. H. OCLC 616786469.
• Taylor, Albert Pierce (1922). Under Hawaiian Skies. Advertiser Pub. Co. ASIN B000858HQG. ISBN 9781296352646. OCLC 479709.
• Tregaskis, Richard (1973). The warrior king: Hawaii’s Kamehameha the Great. Macmillan. ISBN 9780026198509. OCLC 745361.
• TRUSTEES, Hue-M. (1937). “APPENDIX B REPORT TO THE HAWAIIAN HISTORICAL SOCIETY BY ITS TRUSTEES CONCERNING THE BIRTH DATE OF KAMEHAMEHA I AND KAMEHAMEHA DAY CELEBRATIONS”. Annual Report of the Hawaiian Historical Society. Honolulu: Hawaiian Historical Society. hdl:10524/69.
• Van Dyke, Jon M. (2008). Who Owns the Crown Lands of Hawaii?. University of Hawaii Press. ISBN 978-0824832117. OCLC 263706655.
• Vowell, Sarah (2011). Unfamiliar Fishes. Penguin Publishing Group. ISBN 978-1-101-48645-0. OCLC 865337344.