Prince Harry has a close relationship with his 'other father' David Foster - whose wife starred in school musicals with Meghan.
While The Duke of Sussex, 37, was photographed enjoying a game of polo in California on Saturday, his wife Meghan and their children stayed at home.
However, he had plenty of support from the sidelines at the Santa Barbara Polo and Racquet Club, as his friends composer David Foster, 72, his wife American Idol runner-up Katharine McPhee, 38, and their one-year-old son Rennie watched on.
According to reports, David, who is a year younger than Prince Charles, has played a key role in Prince Harry's life who is seen as a 'father figure' to him.
David also helped The Duke and Sussexes' to find a home in Canada before they eventually moved to California and settled down.
Katharine, David's wife, explained how he helped Harry and Meghan find their multi-million dollar mansion in Canada, telling Access Hollywood : "David is the resource guy.
"He knows all the places. He loves to help people. We just hope they end up somewhere where they feel like they can really settle down."
The Duke of Sussex, whose relationship with his dad Prince Charles has deteriorated over the past few years, has seen his relationship with David grow closer since moving to the US.
Katharine also admitted the Duke and her husband have a special bond, she said in May 2020 to Access Hollywood : "My husband has a really, really beautiful relationship with Harry. They're so cute. They're like father and son."
David is also a key player in trying to find private hideaways for Christmas holidays as he helped arranged a secret holiday for Meghan's mum Doreen and then-seven-month-old Archie.
He knew the family needed a getaway for a few weeks and was more than willing to use his contacts and knowledge to source somewhere exclusive for the royals.
And in a strange coincidence, Katharine attended the same Catholic school as Meghan.
However, The Duchess was already at high school by the time Katharine was at the Los Angeles middle school.
Katherine attended a school called Immaculate Heart and admitted to starring in a couple of school musicals with Meghan but were never 'close friends'.
However, after performing in Waitress the musical in London, she and her husband David struck up a friendship with Harry and Meghan and have remain in contact ever since.
