Good Morning,
Wow! Everyone has been very busy down under... sleeping on an issue really does work

OK on to business… I too had discovered the 1936 Australian Electoral Roll listing both Nathaniel Gold and his wife Janet Gold. This is how I definitively knew that Janet had also made the trek to Australia; however, I did not have the 1930 Election Roll. Thank you!
The 1894 marriage record for Nathaniel Gold and Janet Black lists Janet’s parents as Adam Black (deceased) and Janet Clelland (deceased). Janet Black was 23 yrs when she married Nathaniel. Perhaps her parents died when she was an infant and James and Euphemia raised her? On that note I quickly did a search of the 1881 Scottish Census and what do you know…
Dwelling: Clyde Street, Carluke, Lanark, Scotland
Adam Black; Border; Unmarried; 36; M; Slater; Lanark, Lanark, Scotland
Euphemia Black; Wife; Married; 31; F; Wife; Lanark, Lanark, Scotland
James Black; Head; Married; 32; M; Slater; Lanark, Lanark, Scotland
Janet Black; Daughter; n/a; 9; F; Scholar; Lesmahagow, Lanark, Scotland
It would now seem very plausible that the 1946 death record found by Judith is in fact my Janet Black. I will order the record from the NSW Registrar and let you know what it comes back with.
As for Euphemia (Effie) Macpherson GOLD b.1895 and Natalie (Nathaniel) Oman Gold b.1907… It is very possible that they did not make the trip to Australia as Euphemia would have been 32 yrs and Natalie would have been 20 yrs in 1927 and possibly already married… The hunt for Euphemia and Natalie continues…

A very warm thank you to everyone for your time and assistance…
Arthur