Well I might have found distant relatives in Marsala. The research is still on going via Facebook. It seems that Di Dia is a common last name in and around Marsala, but all the Italian surname databases really doesn't detect that name, but don't be fooled by this though. Some database software out there has to have 3 or more letters before it will detect and since the name starts off as "Di" so you might have to take out the space and add it as one "DiDia".
I will be leaving to Sandusky, OH this coming July. I will be meeting my great-grandfather brother Vincenzo side of the family. I really need to get my records inline before my departure. I let you all know how it went, so stay tune!