On the heels of Princess Eugenie’s wedding and Meghan Markle’s pregnancy news, Pippa Middleton gave birth to a baby boy, and she just announced his name. Here's everything to know.

By Rachel Sylvester
Updated November 12, 2018
Kate Middleton's Sister Pippa Middleton With Husband James Matthews at Princess Eugenie's Wedding
Credit: Pool/Samir Hussein

And baby makes three! Nearly a month after their first born’s arrival on October 15, Pippa Middleton and her husband, James Matthews, have seemingly chosen a name for their baby boy.

The Mail on Sunday reported on November 11 that the couple chose Arthur Michael William for their first born—a three-part moniker that just may honor both Pippa’s father and James’ younger brother. Pippa and Kate’s father, Michael Middleton, shares the same first name as James’ late brother, Michael Matthews, who tragically passed away while climbing Mount Everest in 1999.

As for the story behind Arthur, the name derives from English origin and often means "one who is noble or courageous." The name comes from the Irish Gaelic word for "stone," and Arthur is also known as "bear" in Celtic. While the moniker hasn’t cracked the list for top baby names just yet, after this weekend’s announcement, we’re willing to bet Arthur is about to rise in popularity.

Just a few days before Arthur Michael William’s birth, the younger Middleton sister, who’s 35, attended Princess Eugenie’s wedding with her husband and the rest of the royal bunch.

It’s been quite the season for royal-related baby news. First came the announcement of Meghan Markle and Prince Harry’s baby-to-be, and just hours later, Pippa Middleton was spotted checking into the Lindo Wing at St. Mary’s Hospital—the very same maternity wing where Pippa’s sister, Kate Middleton, gave birth to all three of her children (you know, the casual heirs to the British throne).

The arrival of Arthur Michael William Matthews also makes Prince William and the Duchess of Cambridge an uncle and aunt for the first time. "The Duke and Duchess of Cambridge are thrilled for Pippa and James," Kensington Palace said in a statement on behalf of Pippa’s royal big sis.