Wikipedia
ʻUmi-a-Līloa (fifteenth century) was a ruling ali'i-ai-moku (district high chief of Hawai'i) who inherited religious authority of Hawai'i from his father, High Chief Liloa, whose line is traced, unbroken to Hawaiian "creation". His mother was Akahi. She was of a lesser line of chiefs who Liloa had fallen in love with when he discovered her bathing in a river. He became Chief after the death of his half-brother Hākau, who inherited the lands of his father to rule. Umi-a-Liloa was considered a just ruler, religious and the first to unite almost all of the Big Island. The legend of Umi is one of the most popular hero sagas in Hawaiian history. While there is probably embellishment to the story, as many sagas do, a portion of historic accuracy remains.
ʻUmiʻs wife was Princess Piʻikea, daughter of Piʻilani. Piʻikea and ʻUmi were the parents of son Kumalae and daughter Aihākōkō.