Name, year and place of birth, year and place of death, from Australian Royalty website, found in November 2023 and added here in December 2023:
https://australianroyalty.net.au/tree/purnellmccor...117/Louisa-Singleton
Name: Louisa Singleton
Birth: 1827, New South Wales, Australia
Death: 1908 (aged 81 years), Singleton, Hunter, New South Wales, Australia
Name: Louisa Schulzen
Death Date: 1908
Death Place: New South Wales
Father's name: Benjamin
Mother's name: Mary J
Registration Year: 1908
Registration Place: Singleton, New South Wales
Registration Number: 7321
Burial: Whittingham, Hunter, New South Wales, Australia

Date of birth, more exact place of birth, date and place of marriage to William Newsham, husband Wiiliam Newsham died in 1854 age 38, Louisa remarried in 1866 at Patricks Plains, Singleton, to Ludwig William SCHULZER who was born 1823 in Germany. Ludwig died 15 May 1881 Branxton, Greta, NSW and Louisa died 15 Apr 1908 in Singleton, and was buried at Whittington. Found in December 2023 from:
https://winsomegriffin.com/Newsham/Newshams_Wisbech.html

Record, photo of headstone, from Find a Grave website found in September 2024:
https://www.findagrave.com/memorial/206737079/louisa_schultzen
Louisa Singleton Schultzen
Birth: 28 Sep 1827
Death: 15 Apr 1908 (aged 80), Singleton, Singleton Council, New South Wales, Australia
Burial: Whittingham Cemetery, Singleton, Singleton Council, New South Wales, Australia
Map GPS-Latitude: -32.5897361, Longitude: 151.1809694
Plot: Anglican section