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By PEOPLE.COM/Alexia Fernandez
Updated: Sep 28, 2016 @ 12:26 pm
Unique Nicole/FilmMagic

Gossip Girl alum Sam Page has just joined the ranks of fatherhood.

On Tuesday, the actor posted a sweet picture of his newborn son, Logan, on Instagram, reclining against his dog.

“These two are going to learn a lot from each other,” Page, 39, wrote in the caption. “Welcome to the world, my son Logan.”

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Page and his wife, Cassidy Boesch, married in November 2014 in a villa just outside of Santa Barbara, California. He posted a photo of the two on their wedding day, writing, “Making it official.”

Making it official.

A photo posted by Sam Page (@spage33) on

Family and friends attended the wedding, including Mean Girls actor Jonathan Bennett, who served as groomsman.

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Page has also starred on Mad MenUnbreakable Kimmy Schmidt, and House of Cards.

The Mad Men star keeps his person life exceptionally private, having posted his last Instagram photo about 38 weeks ago.