Oh boy! David Arquette welcomes his third child and honors late sister Alexis with a unique name

LOS ANGELES, CA - DECEMBER 09: Actor David Arquette (L), actress Patricia Arquette, and actor Alexis Arquette (R) at the after party for the FX Network's premiere screening of "Dirt" at Republic on December 9, 2006 in Los Angeles, California. (Photo by Charley Gallay/Getty Images)

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Congratulations David and Christina Arquette!

This week, Arquette shared the news that he is a father for the third time. The actor shared the news in a sweet photo posted to Instagram. Augustus Alexis Arquette was born Wednesday, March 8.

According to PEOPLE, the newborn will go by Gus, but his middle name is a nod to Arquette’s late sister, Alexis Arquette, who died suddenly in September.

Baby Gus joins big brother Charlie, 2, and Arquette’s daughter from previous marriage to Courteney Cox, Coco, 12.

In October, Arquette shared a video of his eldest son Charlie kissing a sonogram of his little brother.

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“So incredibly blessed and honored that my wife @christinaarquette is pregnant with a baby boy! Thank you Christina and humbled gratitude to G-D for this tremendous gift! Charlie and Coco are so excited and I am over the moon!!!” he wrote at the time.

Congratulations to the happy family!

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