I'm searching for any information on my grandfather Zupito (or Zopito) DiQuinzio born around 1890 in either Teramo or Penne. He married Erminia Costantini, probably from Penne and born in 1888. They had three children, Gino DiQuinzio (born in Penne), Gilda and Julio born in Harrison New York. Zupito emigrated to New York in 1903. His wife emigrated in 1916 with their then 4 year old son Gino. I am having difficulty finding any information about either of their parents. I believe that Zupito's father was named Antonio DiQuinzio based on a 1920s cencus notation.
Any assistance you could provide would be appreciated.