JM, definitely one which caused a twitch because two of her shipmates on Canada were Bridget and Winifred McNally from Mayo, and identity swap immediately came to mind, but Bridge and Winny are accounted for.
She was aka Hickey, convicted City of Dublin August 1816, one month after Mary Neale (sen) and Mary neale (jun), and all three transported per Canada 1817- I didn't follow the Marys, but Catherine was embarked on Elizabeth Henrietta 11th August 1817 to Hobart (Col Sec Index) The Convict Permission to Marry at the Archives shows her as marrying Edward Jones- but that was 1842 and she was per Westmoreland, so not her. She received 7 years, so would normally be f/s in 1823, and no convict permission to marry is shown marry between 1817-1824.
I can't find my notes on her, but I know I've considered her, but can't remember why I discarded her., so thanks for bring her to notice again- need to ferret and poke!
David