Valli and Mandel later welcomed two more children together before they divorced in 1971. Valli went on to marry Mary Ann Hannigan.

In addition to his legendary music career, Frankie Valli is a father of six. The Four Seasons frontman first became a father figure in 1957 when he married ex-wife Mary Mandel, who shared daughter ...

Frankie Valli's first marriage to Mary Mandel: tragedy and resilience Valli wed first wife Mary Mandel, also known as Mary Delgado, in 1957 and remained married to her until 1971.