Sullivans in Fall River, Bristol, MA

I have an ongoing project to identify in-law members of my family with the Sullivan Surname. I have extracted information from censuses between the years 1840-1875, City Directories, and MA Vital Records for the city of Fall River, Bristol, MA in an attempt to compile family data...I have over 15 families begun and as many as 4000 individuals.

This process is a massive undertaking and many of my indiviuals are unlikely to have a family in the long run as I have not found enough corroborative evidence to attach them somewhere. Some individuals came into town worked and then left again, some came into town and died, while still others were born in town and then moved on...somewhere.

This is a request for interested parties, looking for, or in possession of, information they are willing to share.