Hi Sue & Elizabeth
The marriage year I found was on the Qld BMDs site.
You can find Elizabeth and others on the Brisbane city council web site. at South Brisbane Cemetery with burial dates
Qualtrough Elizabeth M 04 /05 /1903 Qualtrough Walter H 22 /07/ 1910
Qualtrough William George 26 /08 /1885
Qualtrough Elizabeth 28 /08 /1953 age 89
Qualtrough William 14 / 08 / 1870
Qualtrough Albert R 15 / 07 / 1930
Julie