It’s a boy for Isla Fisher and Sacha Baron Cohen!

The actress, 39, and the ‘Borat’ star, 43, welcomed their third child and first son on March 17 — and now the baby‘s interesting moniker has been revealed!

Montgomery Moses Brian Baron Cohen joins the couple’s two older daughters, Olive, 7, and Elula, 4, making the Baron Cohens a family of five!

isla fisher and sacha baron cohen

Isla showed off her growing baby bump on February 22, 2015.

“My priority is always my family,” proud mom Isla previously told ‘Cosmopolitan UK‘ in a May 2013 interview. “Motherhood boils everything down to the essentials.”

Related: Ralph Lauren’s Daughter Dylan Lauren Welcomes Twins

Congratulations to the happy couple on their newest addition!

TMZ‘ was the first to report the baby’s name.