Kamehameha I
Kauaʻi and rebellion of Nāmakehā

After his conquest of Oahu in the summer of 1795, Kamehameha I prepared his forces for the conquest of Kauaʻi, the last remaining island kingdom out of his control. In the spring of 1796, he attempted to continue with his forces to Kauaʻi but he lost many of his canoes in the strong winds and rough seas of the Kaʻieʻie Waho channel. He returned to Hawaii to pacify the rebellion of Nāmakehā (brother of Kaʻiana) in Hilo and ruled from Hawaii for the next six years as he consolidated his conquests and prepare for a second invasion of Kauaʻi. At Hilo, Kamehameha I commissioned the building a large fleet of 800 (according to Kamakau) double-hulled war canoes called peleleu along with Western schooners, and he also stockpile large number of guns, canons and ammunition. He took his peleleu to Maui where he stayed from 1802 to 1803 and then to Oʻahu in late 1803 or early 1804. While in Oʻahu, a large percentage of his force was killed by the maʻi ʻokuʻu epidemic, which was thought to be either cholera or bubonic plague. Kamehameha I contracted the illness but survived. The second invasion of Kauaʻi was postponed.

In April 1810, Kamehameha I negotiated the peaceful unification of the islands with Kauaʻi. His court genealogist and high priest Kalaikuʻahulu was instrumental in the monarch's decision not to kill Kaumualiʻi, the ruler of that island, when he was the single member of the aliʻi council to agree with Kamehameha's own reluctance to do so. The other aliʻi continued with the plan to poison Kaumualiʻi when Isaac Davis warned him, making the ruler cut his trip short and return to Kauaʻi, leaving Davis to be poisoned by the aliʻi instead.
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