Nearly a week after Dave Grohl publicly revealed he fathered a child outside of his marriage, multiple sources tell PEOPLE his wife Jordyn has known for "a while" about the news.

Foo Fighters' Dave Grohl revealed he welcomed a baby daughter outside of his marriage to Jordyn Blum, who he shares kids Violet, 18, Harper, 15, and Ophelia, 10, with.

Dave Grohl announced on Sept. 10 that he'd recently welcomed a baby girl outside of his 21-year marriage to Jordyn Blum. Grohl and Blum are parents to three daughters.

Dave Grohl has confirmed he has been unfaithful to his wife of 21 years, Jordyn Blum, and has fathered a child with another woman after rumours of his infidelity began swirling last year.

Dave Grohl’s friendliness towards the opposite sex has allegedly been an issue in his marriage for years — way before he admitted to cheating on his wife and welcoming a baby with another woman. The Foo Fighters frontman,

Dave Grohl’s wife, Jordyn Blum, was reportedly “shocked” to discover her rock star husband had fathered a baby with another woman. In fact, insiders close to Blum tell People that the couple’s future remains unclear as a result of the news.