Dear Jenny Thank you for your research into the BMD in Victoria. It is possible that John Mallin did remarry in Victoria but we have no knowledge of that . If he wasn't married then it is most likely that his death wasn't registered, at least that's how it was in Ireland at that time. Would there be a registration of the mines or miners for Bendigo region or assay office records for claims? Id guess John Mallin was born in 1828 or thereabouts. His parents lived in Dublin City and I think he had a sister named Elizabeth. Im not sure how many siblings he had though. Best Wishes Sean Tapley