His Half-Sister
Arnold Schwarzenegger is his dad, so he has many half-siblings. One of them is Katherine Schwarzenegger. She’s an author and published one children’s book and three self-help books. Katherine married Chris Pratt, and they share two daughters.
His Half-Sister
His Half-Brother
Patrick Schwarzenegger is Joseph’s half-brother, and he’s also an entrepreneur, investor, actor, and model. He’s signed with LA Models but has worked for Armani and Ralph Lauren. Likewise, he’s been in various films, such as Moxie, Daniel Isn’t Real, and others.
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His Half-Brother