There have been actually four Hawaiian rikishi:

Jesse James Wailani Kuhaulua, a.k.a. Takamiyama Daigoro (the first foreign born sumo wrestler to win the top division championship in 1972; after retirement, opened his own training stable, the Azumazeki-beya)

Salevaa Atisanoe, a.k.a. Konishiki Yasokichi (actually of Samoan origin)

Chad Haaheo Rowan, a.k.a. Akebono  Taro (the first foreign born wrestler ever to reach yokozuna)

Fiamalu Penitani, a.k.a. Musashimaru Koyo (the second foreign-born wrestler in history to reach the rank of yokozuna; actually of Samoan origin)

Truth unfolds in time through a communal process.