Everything is about context–even abbreviations. From the illustration it should be apparent that these 1840-era abbreviations are for places in the Boston area. Abbreviations can be used for more than just place names, can change over time, and may vary from one location to another.
When trying to determine what an abbreviation references, keep in mind the context–the time period and the location. Abbreviations, like many things, are all about context.
This item was located on GenealogyBank. Search there for your relative.