I found no assignment in Trove.
https://trove.nla.gov.au/newspaper/article/230139504
New South Wales Government Gazette (Sydney, NSW : 1832 - 1900) Wed 16 Dec 1840 [Issue No.82] Page 1356
Principal Superintendent of Convicts’ Office, Sydney, 15th December, 1840.
THE undermentioned persons have obtained their Certificates of Freedom since the last day of publication, viz :—
...
Martin Anne Maria, Lucy Davidson
https://trove.nla.gov.au/newspaper/article/230139504
New South Wales Government Gazette (Sydney, NSW : 1832 - 1900) Wed 16 Dec 1840 [Issue No.82] Page 1356
Principal Superintendent of Convicts’ Office, Sydney, 15th December, 1840.
THE undermentioned persons have obtained their Certificates of Freedom since the last day of publication, viz :—
...
Martin Anne Maria, Lucy Davidson