Prince Charles laughed as a well-wisher shouted to him, "Congratulations Sir, it's triplets!"
As the Prince walked over to say hello, John Dowson joked, "I heard it on the radio".
Mr Dowson said afterwards, "He just laughed, he was really jolly. Everybody's so excited in the country for him".
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He suggested people who are not concerned about the new notes donate their bodies for 'decorative use in future five pound notes'.
Tens of thousands of people lined the streets of Chapecó for a memorial ceremony honouring footballers killed in a plane crash.
Drivers with remote locking vehicles are being advised to manually check their cars are locked before leaving them.