Could not find a death of an Isaac Benjamin but did find the following for Isiaiah Benjamin....do you think this could be him?
Digger - Federation Index. Victoria 1889-1901
Surname : benjamin (111 matches)
Event : d (219331 matches)
Total matching records: 32
Given Names: Isiaiah
Spouse Surname/Father: Abraham
Spouse Gvn Names/Mother: Sarah JOSEPHS
Death Place: Melb S
Reg. Number: 12957
Also had a look at the Victorian BDM's Historic Indexes and one Isaac Benjamin came up but you have to pay 99c to see if this could be your fellow before ordering the record.https://online.justice.vic.gov.au/bdm/index-search?action=ge...