I am also researching the Tedesco Family in New Haven, CT. My great-great grandmother was Julia Eva Tedesco, born: January 3, 1876 in Cusano Mutri Benevento, Italy and died June 3, 1936.On her death certificate her father's first name is not listed, however, her mother's name was Marianna Franco from Cusano Mutri.
Julia married Antonio Petrillo from Cusano Mutri Benvento also.They had two daughter there, Rose and Christina then moved to Woodbridge, CT and had Catherine (Kitty), Mary, Marion, Julia (Jane), Phyllis, Domenic and Anthony.
Julia and Antonio are buried at St. Bernard's Cemetary in New Haven, CT.I have been unable as of yet to find out if she had any siblings.
Also, while visiting another family member's grave in East Haven, CT I came by the head stone of Antonio Tedesco (Husband and Father) born: March 9, 1911 and died on March 22, 1986.Next to him was (Wife and Mother) Miriam Tedesco, born:August 14, 1926 and died: November 28, 1982.
Lita, I hope that this information helps you in your search, and if you have any new information on the Tedesco's in the area from Cusano Mutri Benevento I would love to hear from you.