The mother-of-two spoke to Samantha Balaban before the birth of her daughter Lilibet and spoke of her New York Times bestseller book.
Clearing up confusion about the page in question, Meghan confirmed that it was actually inspired by a sergeant she met in Texas a number of years ago.
She told Samantha on NPR show Weekend Edition: “He had told me the story about how he wasn’t able to teach his son how to play catch because he was away.
“And so he and his son would mail this baseball back and forth to each other from Texas to Afghanistan and write the date on it.”
She added: “That page is true to form for him and his family.
“There are lots of little small moments like that that were personal memories or anecdotes that I wanted infused in there.”
However Harry and Archie’s relationship certainly did inspire many elements within the book.
Meghan said: “I often find, and especially in this past year, I think so many of us realised how much happens in the quiet.
“It was definitely moments like that, watching them from out of the window and watching [my husband] just, you know, rock him to sleep or carry him or, you know … those lived experiences, from my observation, are the things that I infused in this poem.”