But Richard added: “Personally, I would prefer to see a larger royal family.”
He said he felt it would allow ‘The Firm’ to carry out “more official engagements” and meet “more members of the public”, adding: “If Charlotte is to get a job and not be an active member of ‘The Firm’, she needs to be ready to step into the breach, if needed.”
Prince William, 40, and his wife Catherine, 41, who married in 2011, also have third child, Prince Louis, four.
The royal’s younger brother Prince Harry, 38, spoke after the release of his memoir Spare in January about how he fears at least one of his sibling’s three children will “end up” like him, as a “spare” heir.
He told the Daily Telegraph: “Though William and I have talked about it once or twice, and he has made it very clear to me that his kids are not my responsibility, I still feel a responsibility knowing that out of those three children, at least one will end up like me, the spare.”
But royal expert Katie Nicholl said the Waleses are giving their children as normal an upbringing as possible. She added: “George, Charlotte and Louis are enjoying a childhood Harry and William didn’t get to enjoy.”
“I think that is why William and Kate are channelling everything they can into raising their children with an understanding of who they are as royals, but as ordinary children too.”
Writing in Spare, Harry claimed he knew he was there to give William an organ donation if needed to maintain the line of succession to the throne.
He added, “I was brought into this world in case something happened to Willy”, and said the feeling was “regularly reinforced” throughout his life as a royal.