Hi Jean, he was Robert. All I have found is a 1916 memorial by Robina in a newspaper listed on the wonderful indexing project. So he may not have died in Victoria, it says Woodburn, Brighton as the death place. Sorry it was 1913 not 1914.
I see her birth is in the Brighton registration district of Tasmania. Could they be the same?I understand her family lived at Kempton, is that in the Brighton district?
I don't recognise the other SOTHERN (often mis-spelt!) I am missing a brother of Robert, Peter, & 3 of their Uncles so not unusual for family members to just diappear.