According to WikiTree profile: Elizabeth De Meur, they both died in 1916.
One at Penshurst NSA 2222 and the other at Hurstville NSW 2220. The distance between Penshurst and Hurstville is only 1.4 km or 3 minutes away from one another.
I did not get a lot of information at familysearch.org on this couple. Maybe another source would be better able to answer your question.