Lady Gaga is related to Madonna: Documents show pop singers are ninth cousins once removed

It's no wonderLady Gaga's music sometimes sounds suspiciously similar to Madonna's greatest hits.

The singers are related, according to celebrity genealogistChris Child.

"They are ninth cousins once removed,"he told theBoston Globe.

Child, who works for theNew England Historic Genealogical Society, reportedly provided proof, showing how he found their common ancestors: a farming couple who moved fromFrancetoQuebecin the 1600s.

"When I saw that Lady Gaga had French Canadian ancestry,"he explained,"I thought there might be something there."

Child said he can trace French Canadian families"back 200 years within minutes"because priests in Quebec handily indexed all marriages between the 1600s and the 1900s.

Another recent discovery:Prince WilliamandKate Middletonwere related before they walked down the aisle last month.

The pair is connected distantly through the latePrincess Diana's ancestry, Child said.

Madonnahas her own connection to the royal family, too. Or at least she used to.

The music icon's ex-husband,Guy Ritchie, is Middleton's fourth cousin.

Reps for Madonna and Lady Gaga have not yet responded for comment.

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