The Duke of Edinburgh - who died last month aged 99 - reportedly bequeathed most of his £30 million ($58m) estate to his wife the Queen but also left a "generous" financial gift to some of his closest aides.
A source told the Sun newspaper's Fabulous Digital: "Unlike some other royals, Prince Philip will be generous to the three men who looked after him.
"These include his private secretary Brigadier Archie Miller Bakewell, his page William Henderson and valet Stephen Niedojadlo."
All three men were involved in Philip's funeral procession, and Henderson and Niedojadlo were regularly by the prince's side at Wood Farm on the Sandringham Estate, where he spent most of his time.