On Sat, Feb 29, 2020 at 12:56 AM, gordberger@... wrote
There are no Tyefield of that spelling listed in the telephone book (whitepages.com.au), nor with variation Tyfield. The name Tyfield, but not Tyefield, appears in an Australian internet search and also in Ancestry Australian based searches. I note there is a Sydney based chiropractor named Susan Tyfield who is originally from SA.
Maybe broaden your search to include the spelling variant Tyfield.