Adding to the family! Robin Williams’ son Zak Williams welcomed his first child with fiancée Olivia June, Us Weekly can confirm.

The mental-health advocate, 36, and the tech-startup founder’s son was born on May 22, according to a rep. The little one weighed 8 lbs. and was 20-and-a-half inches long.

The couple paid tribute to Robin by naming their son McLaurin Clement Williams. The baby boy shares his first name with the late actor, whose middle name was McLaurin. The pair plan to call him Mickey.

Zelda Williams, Zak’s half-sister, joined in the happy occasion, taking photos of the entrepreneur and June with their newborn.

Robin shared his eldest son with his first wife, Valerie Velardi. The pair divorced in 1988 following 10 years of marriage.

19 PHOTOS Robin Williams with his children See Gallery Robin Williams with his children Robin Williams, daughter Zelda and son Cody during "RV" Los Angeles Premiere - Arrivals at Mann Village Theatre in Westwood, California, United States. (Photo by Gregg DeGuire/WireImage) HOLLYWOOD, CA - NOVEMBER 9: Robin Williams and Zelda Williams arrive at "Old Dogs" World Premiere at the El Capitan Theater on November 9, 2009 in Hollywood, California. (Photo by Gregg DeGuire/FilmMagic) Zelda Williams and Robin Williams during Robin Williams and JoJo Visit MTV's "TRL" - April 27, 2006 at MTV Studios - Times Square in New York City, New York, United States. (Photo by Jason Kempin/FilmMagic) Cody Williams and actor Robin Williams attend "A Magical Evening" hosted by The Christopher and Dana Reeve Foundation at The Marriott Marquis on November 12, 2007 in New York City. (Photo by L. Busacca/WireImage) NEW YORK - NOVEMBER 18: Zak Williams and Robin Williams attend the Timo Pre Fall 2009 Launch with Interview Magazine at Phillips De Pury on November 18, 2008 in New York City. (Photo by Jamie McCarthy/WireImage for Timo Wallets LLC) Robin Williams and his daughter Zelda at the The Beverly Hilton Hotel in Beverly Hills, California (Photo by Lester Cohen/WireImage) NEW YORK, NY - OCTOBER 05: Zelda Williams attends The Grand Opening Of SAG-AFTRA Foundation's Robin Williams Center at SAG-AFTRA Foundation Robin Williams Center on October 5, 2016 in New York City. (Photo by Steve Zak Photography/WireImage) NEW YORK, NY - OCTOBER 05: Zachary Pym Williams and Zelda Willimas attend The Grand Opening Of SAG-AFTRA Foundation's Robin Williams Center at SAG-AFTRA Foundation Robin Williams Center on October 5, 2016 in New York City. (Photo by Steve Zak Photography/WireImage) NEW YORK, NY - OCTOBER 05: Zachary Pym Williams attends The Grand Opening Of SAG-AFTRA Foundation's Robin Williams Center at SAG-AFTRA Foundation Robin Williams Center on October 5, 2016 in New York City. (Photo by Steve Zak Photography/WireImage) SAN FRANCISCO, CA - OCTOBER 26: Zelda and Cody Williams, children of Robin Williams, take part in pre-game ceremonies before Game Five of the 2014 World Series between the San Francisco Giants and the Kansas City Royals at AT&T Park on October 26, 2014 in San Francisco, California. (Photo by Jamie Squire/Getty Images) Billy Crystal greets Robin Williams' son Zak Williams before Zak throws out the first pitch before the start of San Francisco Giants' Game 5 of baseball's World Series against the Kansas City Royals at AT&T Park in San Francisco, Calif., on Sunday, Oct. 26, 2014.(Susan Tripp Pollard/Bay Area News Group)(Digital First Media Group/Bay Area News via Getty Images) Robin Williams and Zelda Williams arrive to the New York Premiere of "House of D" held at Loews Lincoln Square , New York City ZAK BRIAN. (Photo by Brian ZAK/Gamma-Rapho via Getty Images) US actress and daughter of late US actor Robin Williams, Zelda Williams arrives to attend the 18th Post-Golden Globes Party hosted by Warner Bros Pictures and InStyle at the Beverly Hilton Hotel on January 8, 2017 in Beverly Hills, California. / AFP / LILLY LAWRENCE (Photo credit should read LILLY LAWRENCE/AFP/Getty Images) Actor Robin Williams and his daughter Zelda pose on arrival for the world premiere of the movie 'Happy Feet Two' in Hollywood on November 13, 2011 in southern California. Happy Feet Two will presented in RealD 3D and IMAX 3D, and also in 2D, on November 18, 2011. AFP PHOTO / Frederic J. BROWN (Photo credit should read FREDERIC J. BROWN/AFP/Getty Images) HOLLYWOOD, CA - NOVEMBER 13: Actors Zelda Williams and Robin Williams attend the "Happy Feet Two" Los Angeles Premiere at Grauman's Chinese Theatre on November 13, 2011 in Hollywood, California. (Photo by Lester Cohen/WireImage) WESTWOOD, LOS ANGELES, CA - AUGUST 13: Robin Williams and Zelda Williams pose at the premiere of Magnolia Pictures' 'World's Greatest Dad' at The Landmark Theater on August 13, 2009 in Los Angeles, California. (Photo by Jason Merritt/Getty Images) HOLLYWOOD - JULY 20: Robin Williams and Zelda Williams attend the 2008 Outfest Film Festival Hosts The 14th Annual Film Competition Awards at the John Anson Ford Amphitheatre on July 20, 2008 in Hollywood, California. (Photo by Amy Graves/WireImage) LOS ANGELES - JANUARY 09: (EXCLUSIVE ACCESS) Zelda Williams and Robin Williams backstage during the 33rd Annual People's Choice Awards held at the Shrine Auditorium on January 9, 2007 in Los Angeles, California. (Photo by Michael Buckner/Getty Images for PCA) Robin Williams and Daughter Zelda during World Premiere of "Happy Feet" - Arrivals at Chinese Theater in Hollywood, California, United States. (Photo by SGranitz/WireImage) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

The Oscar winner later welcomed Zelda, 29, and son Cody, 27, with second wife Marsha Garces. The two split in 2008, nearly nine years after tying the knot. The comedian wed his third wife, Susan Schneider Williams, in 2011.

Robin died of suicide at age 63 in August 2014. Schneider Williams opened up about his health struggles in a November 2016 interview on CBS This Morning. “[Parkinson’s disease] is actually an accurate diagnosis; however, that was the clinical side. The pathology was that he had diffuse Lewy body disease, which is what took him,” she explained at the time. “I can tell you in his autopsy, the coroner’s report was clear that he had Lewy body throughout all of his brain and brain stem — nearly every region.”

Lewy body disease occurs when abnormal protein deposits build up over time, affecting the brain and sometimes leading to changes in behavior, movement and mood.

Zelda spoke out about coping with her father’s death in August 2016. “It’s funny because for a while I think nobody would let me do anything. It was like, ‘Oh s–t, are you OK?’ and then even if you are OK, they’re like, ‘But what’s wrong?’” she said on Chelsea. “And so for a while, I was kind of left to my own devices and a lot of stuff came out of that because I ended up writing 12 scripts. But then, I was also like, ‘Is there something wrong with me?’ and also, I didn’t see a lot of daylight for a while. But now I’m doing a lot more of that!”