First jigsaw will give co ordinates for South and the second jigsaw will give co ordinates for the East
General Stewart lived at Strath until his death in 1854. His son James had 'Stewarts Castle', built across the road from his fathers home in 1874.
Good websites on General Stewart who is buried near his home on Mount Pleasant, the second jigsaw.
https://www.findagrave.com/memorial/219540403/william-stewart
https://www.bathurstfhg.asn.au/major-general-william-stewart/
https://trove.nla.gov.au/newspaper/article/12959127
https://victorianweb.org/art/architecture/australia/poc3.html
https://adb.anu.edu.au/biography/stewart-william-2700