From : A house existed here in 1373. We think this was on the site of today's Canonbury Tower, just to the north of today's Canonbury House. "From c. 1770 John Dawes replaced the south range of Canonbury House with new houses and the west range with a villa; the east range was divided into three dwellings. More houses were built on the south side in the late 18th century."
From the 1973 'Islington' by Pieter Zwart: The canons of St Bartholomew had their country retreat here. After the 1536 dissolution of the monasteries it was transformed into a magnificent mansion by Sir John Spencer, sometime Lord Mayor. It then passed to the Northampton family. In 1770 John Dawes built the current Canonbury House and the houses in Canonbury Place, immediately to the south. This must be the south range to which BHO refers. And in Google Satellite view we think you can see the east range now occupied by the school, North Bridge House.
See John Addey for what might have happened in this house in more recent times.
Our image shows the house on an 1805 map.
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