Who Brought Them Furry Animals In?

Near Dalston, between Southgate Road and Kingsland Road, was De Beauvoir Road. And still is, except that it's now called, by some people, something different.
It used to be called De Beauvoir Road, pronounced d'bo-vwar. But then in the 1970's and early 80's these middle-class gentrified people started moving in, because some of the houses are quite spacious and sound, and suddenly, from nowhere, we had  De Beaver Town.
In vain I searched for little furry animals that were gnawing at the woodwork and building dams in the gutter when it rained, but sadly I never found any.
Though I'm still looking.
And funnily enough, when we referred to d'bo-vwar road, these gentrified folks laughed at us, as if we were saying something outrageously amusing.

In d'bo-vwar Road, and running along Downham Road, is a great big housing estate, the De Beauvoir Estate, which according to Wikipedia was completed in 1971, though people were moving in there well before that. It is high-density housing, in flats, all looks a bit municipal.
Wikipedia also has this fascinating snippet: 'De Beauvoir Town was home to William Lyttle (1931–2010), a retired electrical engineer known as the Mole Man of Hackney, who dug a series of tunnels under his 20-room property on the corner of Mortimer Road and Stamford Road. In 2001, his tunnelling caused an 8 ft (2.4 m) hole to appear in the pavement on Stamford Road. Reports that the tunnelling had started again in 2006 were confirmed when Hackney Council found a network of tunnels and caverns, some 8 m (26 ft) deep, spreading up to 20m in every direction from his house.'
Could it be that he was the origin of this idea of the area being full of beavers? Sounds plausible.

Dave