“Looking for the true origins and meanings Diomassi

Hi! My name is Dempsey and i'm doing a school project on surnames. I was looking for surnames starting with D, and while researching, (online) i came across Diomassi, which looked really interesting.

I tried to find more information, but I couldn’t find anything, so I decided to reach out here. Does anyone know its meaning, origin, or cultural significance?

Please help as soon as possible! 🙏

Thanks so much for any insights, sources, or references you can share! 🙏