In a Facebook post, the estate said the sighting was a “significant milestone for our beaver project and who knows what may follow… little kits perhaps?”.
Estate owner Luke Montagu, the Earl of Sandwich, said he was “delighted” to announce the arrival of Chip and Willow, whose names were suggested by members of the public.
He said: “Woody and Twiggy made their famous escape over a year ago and it’s taken us a while to find a new pair.”
As Chip and Willow did not know each other, he said there was a “risk” they might not get along, initially.