It's a special, festive weekend for Michael J. Fox and his family.
On Saturday, May 30, the actor's eldest son from the film "Back to the Future" was born to his wife Tracy Pollan , Sam Michael Fox , celebrated his 37th birthday.
In addition to the birthday boy, a film producer, the couple, who married in 1988, also have twins: 31-year-old Aquinna Kathleen and 31- Summer Skyler Francis , as well as 24-year-old Esme Annabelle .
Tracy shared a sweet selfie with Sam Michael (on Instagram).
To mark the milestone, Sam's parents posted touching messages on Instagram, including photos from his small wedding ceremony with his wife. Molly Milstein, which took place last year.
Tracey shared a photo of herself walking down the aisle with Michael in a gold dress, against a backdrop of picturesque countryside and happy crowds, and then posted a selfie taken of the two of them on another occasion, apparently on holiday.
«"Happy, happy, happy birthday, Shmoo!!!" Tracy wrote. "You're the best, and I couldn't love you more. You make me and everyone around you so happy!"»
Michael also included photos of himself and Sam on vacation, as well as one from a wedding attended by all three of Sam's sisters, and wrote, "Sammy, I love you, they love you, we all love you. You rock. I'm so proud of you, happy birthday, buddy!"«
Fans were quick to respond in the comments section, expressing their delight. One wrote, "This is a fantastic photo. Happy birthday!" while others added, "Beautiful photos of you and Sam. Happy birthday, I hope you have a wonderful day!" "What a beautiful family, Michael!" and "Amazing, he looks just like you. Have a blessed and happy birthday!".
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Shortly after Sam's wedding last year, the Fox family attended Michael's foundation's annual "A Funny Thing Happened on the Way to Parkinson's" charity gala together.
The Fox family in November 2025 (Getty Images)
Tracey, speaking to People at an event about how her children reacted to their father's Parkinson's diagnosis in the early 1990s, said, "Michael was diagnosed before the girls were born and very, very early in Sam's life, so that's basically all they know," adding, "They're incredibly supportive.".
Earlier this year, sisters Skyler and Esme ran the New York City Half Marathon (Getty Images).
«"They're a huge help to me. I rely on them a lot, and Michael is such an optimist, which is wonderful and really helps him, but it's also important to understand that this is a huge problem," she added.
Tracy continued, "It's very difficult for the family, for the caregivers, and obviously for the patient themselves, so I think it's important to acknowledge that and understand that it's not always easy. It's not easy at all," she noted. "So, it's difficult for them, but they come and support us.".