1. The guy asks about "Frances C. Dunahm Age 24; Married; Born in Keanae, Maui, Terr.of HI; in 1925" and "Erleen A. Dunham Age 8 mos; Born in Honolulu, in Sept 1948." But if you look at the ship's passenger list he links to, those individuals' last name is spelled "Dunnam," not "Dunham." He never asked Okubo about anyone named Dunnam.
2. That leaves us with the 9-month-old Roger Dunham. According to Hawaiian Dept of Health, "The Certificate of Hawaiian Birth program was established...to register a person born in Hawaii who was one year old or older and whose birth had not been previously registered in Hawaii." Hawaiianroots.com says, "These forms were issued to people who did not have a birth certificate recorded at the time of their birth." If 9-month-old Roger had a regular birth certificate, he wouldn't be in the Certificate of Hawaiian Birth Index Charlton asked Okubo to search.
Sorry, there's nothing there.
Careful, the deployment and use facts on a birther thread could lead to you being declared an obot.