Depends on the timeframe, Co Durham has some of the best online resources.
Family search.org has probably the best resources, through their catalogue search, but you Do need to know the rough location first.
Where and when was the last know address? That would be a good starting point, my research in that area tells me they didn’t move around that much. Generally 3 or 4 burial sites.
If the death was historic, you could try durhamrecordsOnline which you can do a free search which might give you a start (pay to view the transcript for more details). There are a few other sites but you do need a good starting point to search as there might be some trawling through records involved.
Sorry we crossed River Tyne Lass.