Aloha,
My name is Samantha Kama, and whats pretty funny about this situation is that my grandfather's name is Benjamin Kama. Although, I don't think they are the same person. My grandfather passed away many years ago...before I was even born. We're from Hawaii, but I now reside in Oregon. My dad is Sam Kama and there are a total of 13 kids in his family. If you have some information, I could run it by my father and see what he knows or could possibly find out.
Take Care,
Samantha