January 15, 2015 04:00 PM

Albert L. Ortega/Getty

Sonequa Martin-Green is a mom!

The Walking Dead star welcomed her first child with her husband, actor Kenric Green, on Saturday, Jan. 10, her rep confirms to PEOPLE exclusively.

Son Kenric Justin Green II was born in Los Angeles, weighing 8 lbs., 4 oz.

“We thank God for this incredible blessing,” the proud new parents tell PEOPLE. “We are overjoyed. He’s the coolest little man ever.”

The actress — who spent the final weeks of her pregnancy snapping selfies of her growing belly — announced in September that there was a baby on the way.

“Kenric and I are beyond excited!” she told PEOPLE at the time.

Onscreen, Martin-Green’s character, Sasha, is preparing to set out on her own adventure when the show returns from its winter break on Feb. 8.

— Anya Leon with reporting by Jennifer Garcia

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