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Baby Marvel is the second child for the couple, who are also parents to a boy, Saint Lazlo, born in August 2014.

Wentz also shares a 9-year-old son, Bronx Mowgli, with his ex-wife, Ashlee Simpson.

\"PHOTO:
Jeff Kravitz/FilmMagic/Getty Images
PHOTO: Musician Pete Wentz and model Meagan Camper attend the 2017 Pre-GRAMMY Gala And Salute to Industry Icons Honoring Debra Lee at The Beverly Hilton Hotel on Feb. 11, 2017 in Beverly Hills.
>

The bassist will have a few months to spend at home with his new baby until Fall Out Boy embarks on a 2018 tour in late August to promote the band's seventh studio album, \"MANIA.\"

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