I can't find any details of specific epidemics for the year in question, but it is quite likely that the people living in crowded and unsanitary conditions were under constant threat from sickness such as scarlet fever, cholera (this was later though, in the 1830s) and earlier, plague. Alternatively we could be looking at an accident, or foul play.... I am currently looking at the events surrounding my Shadforth line which involve St Hilda's, Hartlepool so it seems our paths are crossing here!
I can't help you with info regarding 'the raw' but certainly there seem to have been some interesting names for streets/alleys/areas of Hartlepool. If I find anything of use to you, I will post again.
Regards,
GS