English: Isaac Davis (c. 1758–1810) was a Welsh advisor to Kamehameha I and helped form the Kingdom of Hawaii. He arrived in Hawaii in 1790 as the sole survivor of the massacre of the crew of The Fair American. He along with John Young became friends and advisors to Kamehameha. He brought western military knowledge to Hawaii and played a big role during Hawaii's first contacts with the European powers. He spent the rest of his life in Hawaiʻi and was known to the Hawaiian as ʻAikake.