Per an article in Vogue:
Jill had a childhood that was both typical and unusual. She was born in Hammonton, but the family moved around as her banker father, Donald Jacobs, worked his way up the savings-and-loan ladder. He eventually became a vice president at a bank in Chestnut Hill, Pennsylvania, and the family settled in nearby Willow Grove, where Jill attended Upper Moreland High School and graduated in the class of '69. Throughout her childhood, the family would pile into the station wagon every weekend and drive back to Hammonton. "And I would stay with my dad at my one grandmom's house, and Bonny and Jan would stay with my mother at my other grandparents' house," she says. "And then on Sunday, both sets of grandparents would fight about who was going to host dinner. My grandpop was Dominic Giacoppa, but they changed it to Jacobs. So I grew up eating one Italian meal on Sunday, with the wedding soup and the braciole and homemade pasta, and then we'd have to go to my other grandparents' house"—Harold and Mabel Godfrey—"and have roast beef and mashed potatoes and homemade cake."
http://64.233.169.132/search?q=cache:X4iM-IPamVkJ:www.style.com/vogue/feature/2008_NovI am Italian too! My grandfather was born here but all of his brothers and sisters were born in Italy.