Meghan Markle was protected by ex-US President Barack Obama’s former bodyguard over Easter.
She was shielded by Christopher Sanchez over the weekend while at the Invictus Games.
Ex-Secret Service agent Sanchez spent a total of five years protecting presidents — half of the time George W Bush, then the same period for Obama.
He has spent 21 years in national security shielding the rich and famous, and is now a leading light at two high-profile US firms.
He is director of Professional Protection & Investigations in Texas which says its insurance is “above industry standards”.
It boasts expertise in “hostage negotiations, criminal and forensic investigations, crisis management, advance threat protection”.
He is also vice-president of risk management firm Torchstone, which has provided expertise at ten NFL Super Bowls and the last four Presidential elections.
Harry is currently taking legal action against the British Home Office after it denied his request for the level of security afforded to working members of the Royal Family whenever he or his family visit the UK.
There were doubts he would ever set foot in Britain again after he snubbed Prince Philip's memorial service last month, but did make a whistle-stop visit to see the Queen and Prince Charles with Meghan on their way to Holland.
The Sussexes have signed a £113million deal with Netflix who are filming a documentary at the Invictus Games.
But it was not clear who is paying for Sanchez’s security — or if Obama recommended Sanchez’ services to Harry.
The former president Obama joined Harry at the Games in 2017.
It was reported the guard was first spotted minding Meghan, 40, as Harry, 37, took part in the Land Rover Challenge at the event in The Hague, Holland, on Saturday.
He then joined the Duchess as she was driven around the site in an electric golf buggy.
Yesterday he helped guard the British Embassy tent where mum-of-two Meghan took part in a reading class with children of Invictus competitors.
The Sussexes spent the morning at the athletics track and were in the front row for the sitting volleyball as the first full day of competition began.
The couple watched the action next to Jaco Van Gass - a Paralympian gold medallist and former Invictus competitor who suffered life-changing injuries with the British Army.
The 35-year-old veteran, who met Harry in 2011, said the couple are having a "really, really good time" and described the Invictus team as the Duke's "family".
"He's back with his own people, he's back in an environment that he's so natural in and that he cares about," he added.
Harry and Meghan looked relaxed during their visit to the games on Sunday and held hands for much of the time.
They chatted with competitors at the athletics track, many of whom were keen to have pictures taken with them.
