Held at St. George’s Chapel, Charles stepped in for the bride after Meghan’s father was unable to attend the ceremony.
Now Finding Freedom has revealed Charles keeps a reminder of his son’s special day with him at home.
The book says the Prince of Wales keeps a “framed black and white photo of himself escorting his stepdaughter to his Clarence House residence.”
READ MORE: Prince Charles ‘NOT helping finance’ Harry and Meghan’s opulent new home in California
Harry told the BBC at the time that he was not surprised his father had made the gesture.
He said: “I asked him and I think he knew it was going to happen, and he immediately said: ‘Yeah, sure, I’ll do whatever Meghan needs, and I’m here to support you.
“For him it’s a fantastic opportunity to come together and be that support, and you know he’s our dad, so of course he’s going to be there for us.
Other claims about Charles’ support for Meghan and Harry came from the book, written by Omid Scobie and Carolyn Durand
According to a close friend of the Duchess, Meghan “found such a supportive and loving father in Charles, which really changed her life for the better”.
But despite the books that describe Charles and Meghan’s relationship, Mr Scobie later added that Charles and Harry “are hot and cold”.
In an interview with Royal Beat, he claimed that Harry and Prince William had a strained relationship with their father.
He added in the interview about a photoshoot with the royal family: “He’s not just their father, he’s also the future king and their boss – he’s the keeper of the stock market.
“There’s a lot of political stuff here that can fuel a very top-down and top-down relationship, and those at Clarence House felt it was a puzzle to put together.
Charles has been rumored to have been helping Meghan and Harry since moving to the United States.
A source told the Mail Online that the Prince of Wales had helped the couple buy their new $ 14.7million home in Montecito.
They added: “Charles had been keen to help and put his hand in his own pocket to help.
“He’s dedicated to his two sons and whenever he can help them he always will. “
However, a source close to the couple told US Weekly that they took out a mortgage instead.
They said, “Harry could have asked Charles to help with the cost of the house, but he chose not to …
“Getting his father financially involved would allow members of the royal family to control him.”