I am looking at finding relatives who came on board SS Verona and SS America in late 1913 or early 1914 from Naples Italy

There names are Rosario Leonardo, and wife was Romelda or Romilda Leonardo ( maiden name Unguro). 

I know that she came from Rizziconi, and he came from Limatola Italy..

The archives is so vast, I have no idea how to dive into it. 

Data I am looking for is actual manifesto? SS Verona? 

And for Anthony ( Antonio) De Lorenzo ( or Dilorenzo) who came the same year on SS America.