Hi Keith,
I am not sure IF the lieutenant governor's administrative processes in 1822 required him to be notified of the name of the deceased person being buried. But I do know that it was logical for the governor's administration to issue Certificates of Freedom once the sentence had been served. Your chap was sentenced to 14 years transportation beyond the seas. So, perhaps the admin were simply notifying that those 14 years had expired, but were not aware of his decease.
...... period for which the under-mentioned persons were transported expiring at the date opposite their names,Certificates of Freedom may be obtained on that or at any subsequent period, upon application to this Office, or to that of a Police Magistrate in the Interior :-
The notice does not say that George collected his Certificate of Freedom.....
Cheers, JM