Going from Electoral Rolls,,as both Matthew Henry MURRAY and Nellie MURRAY (WATTS/MUTTON) are both showing in 1954 at 16 Venn St, North Perth..this would more than likely be their deaths
1958 MURRAY NELLIE Female 91 ALBERT E N JOHANNA
1959 MURRAY MATTHEW HENRY Male 93 JOHN H HANNAH
From Cemetery Records, Karrakatta Cemetery
Matthew died 21/10/1959 and Nellie died 01/07/1958,,they are buried together and Matthew was the grantee for the burial/graves.