At the turn of the nineteenth century, Great Manson Farm belonged to the Misses Clarke.
In 1841, James Goode, born around 1811, was the head of the farm.
At the time of the 1851 Wales Census, Great Manson Farm was reported to be uninhabited.
By 1861, James Clark, a native of Somerset, England, was the head of Great Manson Farm, the size of which was recorded as 170 acres.
Nicholas Dampier, a 33-year-old native of Somerset, was the head of the 180 acre farm in 1871.
The ostensibly two hundred acre Great Manson Farm was sold for £7750 on 13 September 1873.

In 1881, 62-year-old Lewis Morgan, a native of Breconshire, Wales, was the head of the farm, the record indicating that he was the farmer of 180 acres.
The household included his son David Morgan, among other family members and employees.
Morgan and his family had previously lived in Breconshire.
By 1891, his son David appeared as the head of Great Manson Farm.
Also a native of Breconshire, Wales, David Morgan was recorded at the farm in 1901 and 1911.
He resided there for at least forty-two years, appearing in the 1923 Kelly's Directory of Monmouthshire.

Since 1959 Great Manson Farm has been owned and farmed by the Miles family.
Despite the conversion of the yard and traditional barns to residential dwellings, the farmhouse is still occupied by the family and Great Manson is run as a non intensive sheep farm.
At the turn of the nineteenth century, Great Manson Farm belonged to the Misses Clarke. In 1841, James Goode, born around 1811, was the head of the farm. At the time of the 1851 Wales Census, Great Manson Farm was reported to be uninhabited. By 1861, James Clark, a native of Somerset, England, was the head of Great Manson Farm, the size of which was recorded as 170 acres. Nicholas Dampier, a 33-year-old native of Somerset, was the head of the 180 acre farm in 1871. The ostensibly two hundred acre Great Manson Farm was sold for £7750 on 13 September 1873. 
In 1881, 62-year-old Lewis Morgan, a native of Breconshire, Wales, was the head of the farm, the record indicating that he was the farmer of 180 acres. The household included his son David Morgan, among other family members and employees. Morgan and his family had previously lived in Breconshire. By 1891, his son David appeared as the head of Great Manson Farm. Also a native of Breconshire, Wales, David Morgan was recorded at the farm in 1901 and 1911. He resided there for at least forty-two years, appearing in the 1923 Kelly's Directory of Monmouthshire.
Since 1959 Great Manson Farm has been owned and farmed by the Miles family. Despite the conversion of the yard and traditional barns to residential dwellings, the farmhouse is still occupied by the family and Great Manson is run as a non intensive sheep farm.
Great Manson Farm, Monmouth