Allison Williams welcomes first baby with Alexander Dreymon

Allison Williams and Alexander Dreymon welcomed a baby boy named Arlo this past winter, Page Six can confirm.

The new family was recently spotted on vacation with their loved ones — including the former “Girls” star’s father, newsman Brian Williams — at a private resort in Abaco in the Bahamas, People reports.

“They seemed to be very happy and very much in love,” an insider told the outlet, adding that Allison, 34, was also seen wearing what appeared to be an engagement ring. 

Reps for Allison and Dreymon did not immediately respond to Page Six’s requests for comment. 

The couple — who worked together on the 2020 thriller “Horizon Line” — have reportedly been together since the end of 2019. 

Actress Allison Williams on the red carpet in NYC
This marks the first baby for the “Girls” alum. WireImage

“They are both private people individually, and they made the decision to keep this happy news to just a small circle of family and friends,” a source told People. “But they’re over the moon.”

Allison was previously married to entrepreneur Ricky Van Veen. The pair called it quits in June 2019 after nearly four years of marriage. Van Veen, 41, has since remarried; he wed his partner of two years, Caroline Kassie, last summer. 

Alexander Dreymon on the red carpet in Los Angeles
Williams and Dreymon have reportedly been a couple since the end of 2019. FilmMagic

“I think it’s one of those things where Allison and Ricky are both with their forever people now,” another source told People of the exes. “They remain on good terms, but everyone who knows them agrees that it was for the best.”

Though Allison’s romance with Dreymon, 39, reportedly flourished during the COVID-19 pandemic, a second source told People that they “haven’t been hiding or anything.”

The insider added, “They’ve just been doing their best to keep a low profile.”