The name has a sweet connection to Meghan's childhood

Meghan Markle and Prince Harry paid tribute to the Duke of Sussex's grandmother Queen Elizabeth when it came to naming their daughter. But the name Lilibet — or Lili as Meghan and Harry plan to call her— also holds special meaning for Meghan as well.

Meghan's mom Doria Ragland lovingly gave her the childhood nickname "Flower." In a blog post on her now-defunct lifestyle site, The Tig, Meghan shared her nicknames, writing, "Meg, MM, M&M, and Flower (which my mom has called me since I was little)."

Since Meghan and Harry moved to California last year, the Duchess of Sussex has gotten to spend more time with her mom, who lives nearby in Los Angeles and frequently visits the couple and her grandson Archie in Montecito.

"She definitely gets a lot of her strength from her mother," a friend previously told PEOPLE.

Meghan Markle and Doria Ragland
Meghan Markle Prince Harry Duke Duchess of Sussex
Meghan Markle and Prince Harry
| Credit: Toby Melville - WPA Pool/Getty

Meghan also included lily of the valley in her bridal bouquet when she wed Prince Harry in 2018. The addition of the flower, which is a symbol of happiness and rebirth, was a nod to Harry's late mother, Princess Diana, who also carried lily of the valley in her bouquet on her royal wedding day.

The Duke and Duchess of Sussex made sure to further pay tribute to Harry's beloved mother when it came to their baby girl's middle name, Diana.

Harry reflected on the loss of his mother in his new AppleTV+ docuseries The Me You Can't See. "I wish she could've met Meghan," he said. "I wish she was around for Archie."

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Diana Princess Of Wales & Prince Harry
Princess Diana and Prince Harry
| Credit: Julian Parker/UK Press via Getty

Still, the father of two believes his mother would have been proud of the man he is today and the life that he's created for his family.

"Yeah, I have no doubt that my mom would be incredibly proud of me. I'm living the life that she wanted to live for herself, living the life that she wanted us to be able to live," he continued. "So not only do I know that she's incredibly proud of me, but that she's helped me get here. And I've never felt her presence more as I have done over the last year."

Listen below to our daily podcast PEOPLE Every Day for more on Prince Harry and Meghan Markle's new daughter, Lilibet Diana.

On Sunday, Meghan and Harry shared the news of their daughter's birth in a statement.

"Lili was born on Friday, June 4 at 11:40 a.m. in the trusted care of the doctors and staff at Santa Barbara Cottage Hospital in Santa Barbara, CA. She weighed 7 lbs 11 oz. Both mother and child are healthy and well, and settling in at home," the couple said. "Lili is named after her great-grandmother, Her Majesty The Queen, whose family nickname is Lilibet. Her middle name, Diana, was chosen to honor her beloved late grandmother, The Princess of Wales."