South Austrlian Deaths - Index of Registrations 1842-1915 "WALKER Elizabeth Francis (F) 9w of Norwood d 3 Mar 1852 at (not recorded) rel Thos WALKER (F) dist Ade b148p184".
Note I have not confirmed that Elizabeth Francis was the infant of Thomas and Charlotte Walker. William and Isabella Walker were also living at Norwood around this time and I think they may have all lived together or close by. I have not found any other births which could be children of Thomas & Charlotte. - CW 19 September 2004.