There, Kate and William got their hands dirty by tending to the Brown family's flock of Herdwick and Swaledale sheep, having a go a shearing the animals, herding and repairing a dry stone wall.
He said farmers would be hit by export tariffs and by a "black hole" in subsidy payments.
The 37-year-old Duchess of Cambridge was supporting the local rural community with husband, Prince William, when she made a very sweet confession related to the couple's four-year-old daughter, Princess Charlotte.
"It's a bit of a concern, I wouldn't want to be the last generation after 500 years".
William said: "It's a juggling act for you".
"They were really keen to know what was going on and we told them there were a lot of positive aspects of farming that don't get brought up".
"It's just uncertainty and the not knowing".
Prince William and Kate also met with local residents during a walkabout in the market town of Keswick, where the Duchess expressed her love for Britain's Lake District and revealed she enjoys taking her children Prince George, Princess Charlotte and Prince Louis to explore the rocky region.
After meeting with local workers, they walked through a crowd in Keswick, saying hello to royal watchers and well-wishers who'd gathered to see them.
"I said, 'This is Paddy, obviously that's Max, and this one's Prince Harry, ' and he laughed [and] he said, 'Oh yes". After all, the couple owns an English cocker spaniel named Lupo, whom Kate referenced during the visit.
Mr Irving added: "Then Kate was talking about her dog and she said, "Your dogs are so calm". "You have also played a pivotal role in changing attitudes-and helping people to talk more freely about the way they are feeling and the daily challenges they face", he said.
William and Kate's fondness for dogs should come as no surprise to royal admirers.