Name, estimated year of birth as circa 1840, place of birth as "Devon, England" from 1841 England Census for Civil Parish of Pyworthy, Holsworthy, Devon. A link to this was received from Katia, wife of Tim Grant Oliver, in an email dated 19 December 2022:
Francis Oliver, M, age 1, Born Devon England [circa 1840]

Estimated year of birth as circa 1841, place of birth as "Pyworthy, Devon, England" 1851 England Census for the Parish of Pyworthy, Milton Damerel, Devon, England found in January 2023:
House at "Bounds Cross":
Francis Oliver, Son, M, age 10, Scholar, Born Pyworthy Devon England [circa 1841]

Estimated year of birth and the place of birth is the same as previous 1851 England Census, from 1861 England Census for the Parish of Pyworthy, Holsworthy, Devon, England found in January 2023:
House at "Bounds Cross":
Francis Oliver, Son, M, age 20, Black Smith, Born Pyworthy Devon England [circa 1841]

Looking at the 1841, 1851 and the 1861 Censuses above, one places the estimated year of birth as circa 1840 the other two circa 1841. For now we will place year of birth as circa 1841.

For full family details of the above Censuses, please see personal page of either parent.