Ossulstone hundred

Ossulstone was an ancient hundred in the south east of the county of Middlesex, England.[2] Its area has been entirely absorbed by the growth of London; and now corresponds to the part of Inner London that is north of the River Thames and, from Outer London, parts of the London boroughs of Barnet, Brent, Ealing, Haringey and Hounslow.

The Wikipedia page is