Well, if my facts are correct, your father and I are third cousins, and that would make you and I third cousins - once removed. Caserio and my father ( Egidio ) were second cousins. Your great-grandfather ( Romano )and my grandfather ( Albino ) were first cousins. Your great-great-grandfather ( Luigi ) and my great-grandfather ( Giovanni ) were brothers. Their father's name was Mateo.
If you don't mind ( and she doesn't mind ) - would you give me your mother's maiden name? You could send it email, if you like, rather than post it firstname.lastname@example.org