Regarding my Trove post, New South Wales, Australia, Convict Records, 1810-1891 for William Hutchins on Ancestry.com. au in the category Alphabetical List of Convicts, Title List of Non-Artificer Prisoners, 1822 shows that on September 11, 1824, William Hutchins of the Adamant was assigned to Mrs. Eyres of Parramatta. The Trove article says that William Hitchins, servant to Mr. Eyre, was charged for being abusive to his mistress, and was sentenced to spend 14 days on a treadmill. The newspaper was a little off on the spelling of the names so maybe that where the spelling change came in.