Ivanka Trump is revealing her son’s name, and who she and her husband, Jared Kushner, named him after.

Ivanka gave birth on Monday night, giving daughter Arabella, 2, a brother.

On Tuesday evening, the Celebrity Apprentice star took to Tumblr to show off the first photo of her baby boy and reveal the meaning behind his name, Joseph.

She said he’s name “after each of our paternal grandfathers, both master builders of their generation and inspiring patriarchs of their families.”

Trump went on to say “Jared’s grandfather, Joseph, was a rock. His indomitable spirit, his sense of family, and his work ethic are the values we hope to hand down to our son. My grandfather, Frederick, was a builder not just of tens of thousands of homes throughout this city, but of a tight-knit family that honors to this day the traditions he established.”

She married Kushner, chairman of Observer Media Group, back in 2009 and works as Executive Vice President of Development & Acquisitions at Trump Corporation.

image: NBC