Sidney died on Dec. 11, 1998 and was buried at Eastern Suburbs Memorial Park in Matraville, Randwick City, New South Wales.
↑Australia, Marriage Index, 1788-1950 for Daphne N Greentree & Sidney J Muller , registered at Randwick, NSW (ancestry.com [on-line database]).
↑Find A Grave, database and images (https://www.findagrave.com : accessed 30 December 2017), memorial page for Sidney Joseph Muller (unknown–11 Dec 1998), Find A Grave Memorial no. 175070430, citing Eastern Suburbs Memorial Park, Matraville, Randwick City, New South Wales, Australia ; Maintained by Stombell (contributor 48335209) .
Australia, Electoral Rolls, 1903-1980 for 1943 in Bondi North, Wentworth, NSW. At 11 Gould-street with Daphne.