When Robin Williams‘ son Zak Williams welcomed his first child on Wednesday, May 22, he paid tribute to his late dad in the best way possible! The 26-year-old actor named his baby boy, McLaurin Clement Williams, in honor of his beloved father.

Since Robin’s middle name was McLaurin, it seemed only fitting that Zak and his fiancée, Olivia June, would choose that moniker for their child’s first name. The couple also plan on cutting their baby boy’s name even shorter by just calling him Mickey.

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Once McLaurin arrived, he weighed in at 8 pounds and measured 20-and-a-half inches. In photos that were taken of the family, Zak appeared to be really happy holding his new baby up in his arms, especially after Robin took his own life in 2014.

However, news of McLaurin’s birth couldn’t bring down anyone’s mood, especially his sister and Robin’s only daughter, Zelda Williams.

“News is finally out: I’m an auntie!🍼 ,” the 29-year-old gushed via Instagram on Wednesday, June 12. “Meet Mclaurin Clement Williams, aka Mickey, aka Dr. Baby! He’s a squishably cute pterodactyl cooing tiny wonder and I love him so much already ♥️ big shoutout to Mickey on being the fastest swimmer, and huge congrats to @heyoliviajune and my big bro @zakpym on creating this little joy (and poop) factory!👶🏻 by Zak and Olivia.”

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Olivia also took to Instagram to gush about her new baby boy online. “We are beyond thrilled he chose us to be his parents, and obviously think he’s the best, smartest, and cutest baby ever!!” she said, before thanking Zak. “None of this would be possible without the most incredible and supportive partner a woman could ever hope for. Zak, the headline is true, you’re already and will always be, ‘World’s Greatest Dad!’ Mickey and I are the luckiest.”

Welcome to the world, Mickey!