There is a special law regarding Hawaii that makes everyone born there before statehood a citizen.
§ 1405. Persons born in Hawaii
A person born in Hawaii on or after August 12, 1898, and before April 30, 1900, is declared to be a citizen of the United States as of April 30, 1900. A person born in Hawaii on or after April 30, 1900, is a citizen of the United States at birth. A person who was a citizen of the Republic of Hawaii on August 12, 1898, is declared to be a citizen of the United States as of April 30, 1900.
Wouldn't matter, Hawaii was still part of the US, just as Arizona was when Barry Goldwater was born there.
Hawaii became a state in 1959, so he's have to be two years older than he claims. That just happens to be the year that one of the two student teachers my teacher had was from Oahu. Hawaii was admitted in August of '59, and she became our student teacher in September of '59.