The 69-year-old royal poked fun at the pop star's ever-changing surname as he thanked her for raising £1 million pounds for his Princes' Trust at the foundation's star-studded awards ceremony, held at London's Palladium, on Tuesday (06.03.18).
He quipped as he listed the people who has helped raised cash for the trust: ''I thought to myself some time ago 'who's Cheryl Tweedy?' I suddenly realised I knew the Cheryl bit but missed out on the Tweedy.
''But I'm enormously grateful to her for raising £1 million pounds. I can't keep up with all the changes of names that the companies do either. It was very good of her to want my Trust to join her in her Cheryl's Trust centre in Newcastle last month - she's a great Geordie and she makes such a difference in that part of the world.''
When the 34-year-old singer first started out in the industry, she was known by her maiden name Tweedy, but it changed to Cole when she married Ashley Cole in 2006.
She then went on to tie the knot with Jean-Bernard Fernandez-Versini and adopted his surname until she filed for divorce in 2016 and was just known as ''Cheryl.''
Since getting into a relationship with Liam Payne in late 2016, the brunette beauty seems to be using her maiden name again - even though their 11-month-old son Bear has the former One Direction star's second moniker.
And it's not yet known whether Cheryl will have the same surname as her boyfriend and baby as Liam, 24, doesn't known whether he wants to get married in the future.
He said recently: ''I don't know if I'm the wedding-y type of guy. Weddings feel a bit weird to me. I don't know. Who knows? We'll see.''
But, although there's no wedding bells yet, the couple are happy in ''baby land''.
He said: ''We're just really happy in baby land at the moment. When we're in the kitchen late at night, we were rapping, we were singing. We had a dance battle yesterday. She obviously won. I failed miserably, it was okay.''
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