Former First Daughter Chelsea Clinton and her husband, Marc Mezvinsky, welcomed their second child on Saturday, June 18th.  The proud mom Tweeted out news of his arrival, writing, “Marc and I are overwhelmed with gratitude and love as we celebrate the birth of our son, Aidan Clinton Mezvinsky.”  The following day she wrote, “At 7:41 AM Saturday, our family and hearts expanded with Aidan’s arrival.  We are blessed.”

Baby Aidan joins his big sister, Charlotte Clinton Mezvinsky, 20 months.   According to babynames.com, Aidan is of Irish origin and means “little fire.”  One can’t help but wonder if the couple were inspired by the HBO hit Sex and the City for their children’s names, as Aidan and Charlotte were major characters on the show, which was set in their hometown of New York City.

Chelsea’s parents, President Bill Clinton and presumptive Democratic Presidential candidate Hillary Clinton, were overjoyed with their newest grandchild.  Hillary Tweeted, “What a joy being with our new grandson, Aidan. So grateful. -H”  And President Bill Clinton shared a photo of him and Marc holding Aidan, writing “Aidan has made two dads very happy this Father’s Day. Hillary and I are thrilled for Marc and Chelsea!”