The name is Anglo-Saxon, possibly meaning 'hedge belonging to someone named Osa' or deriving from 'hawe's ege' referring to the Old English 'hawe' and the boundary (edge) of the Southaw wood.
It was first recorded in 1176, in a charter from Henry II to the Abbot of St Albans referring to the abbot's woodland property there.
The area was variously named as Huzeog, Hossegge, Huzeseg, Hwzeseg, Ousage, Ouzage, Owsage and Ussage.
The land was sold after the Dissolution of the Monasteries and a large house was built and parkland laid out.
A condition of tenure was that the woods should supply faggots for the burning of heretics.
In 1614 the estate passed by marriage to Robert Berkeley, and in 1652 the house became the residence of four generations of the Hadley family.
Following the death of John Hadley in 1744 the house was demolished and the estate sold.
A new Osidge House was built by 1808 and later occupied by the Lambert and Bosanquet families, being purchased by David Bevan for his eldest child Louisa Bosanquet.
After her death the estate was rented and later purchased by Thomas Lipton.

The 1868-1883 ordnance survey map of Middlesex shows Osidge as a small rural estate centred around the manor house, adjacent to Chase Side and Blind Lane (now Osidge Lane); across the county line within the parish of East Barnet, in the Hundred of St Albans/Hertfordshire, Osidge fell under East Barnet Valley Urban District in 1863, renamed East Barnet Urban District in 1935.
The area remained rural well into the twentieth century with only a small number of dwellings on its borders until suburbanisation in the early 1930s.
Osidge was given formal status as an electoral ward covering an expanded area bounded by Pymmes Brook, Oakhill and the Southgate border, and in 1965 the district was transferred from Hertfordshire to the London Borough of Barnet.
Osidge was one of several Barnet wards abolished for the 1968 local election, becoming part of the expanded Brunswick Park ward.
The name is Anglo-Saxon, possibly meaning 'hedge belonging to someone named Osa' or deriving from 'hawe's ege' referring to the Old English 'hawe' and the boundary (edge) of the Southaw wood. It was first recorded in 1176, in a charter from Henry II to the Abbot of St Albans referring to the abbot's woodland property there. The area was variously named as Huzeog, Hossegge, Huzeseg, Hwzeseg, Ousage, Ouzage, Owsage and Ussage. The land was sold after the Dissolution of the Monasteries and a large house was built and parkland laid out. A condition of tenure was that the woods should supply faggots for the burning of heretics. In 1614 the estate passed by marriage to Robert Berkeley, and in 1652 the house became the residence of four generations of the Hadley family. Following the death of John Hadley in 1744 the house was demolished and the estate sold. A new Osidge House was built by 1808 and later occupied by the Lambert and Bosanquet families, being purchased by David Bevan for his eldest child Louisa Bosanquet. After her death the estate was rented and later purchased by Thomas Lipton.
The 1868-1883 ordnance survey map of Middlesex shows Osidge as a small rural estate centred around the manor house, adjacent to Chase Side and Blind Lane (now Osidge Lane); across the county line within the parish of East Barnet, in the Hundred of St Albans/Hertfordshire, Osidge fell under East Barnet Valley Urban District in 1863, renamed East Barnet Urban District in 1935. The area remained rural well into the twentieth century with only a small number of dwellings on its borders until suburbanisation in the early 1930s. Osidge was given formal status as an electoral ward covering an expanded area bounded by Pymmes Brook, Oakhill and the Southgate border, and in 1965 the district was transferred from Hertfordshire to the London Borough of Barnet. Osidge was one of several Barnet wards abolished for the 1968 local election, becoming part of the expanded Brunswick Park ward.
Osidge