Statistics for occurrence #1 of “Berkshire counties” in chapter 15 of Historic leaves, volume 4, April, 1905 - January, 1906:

...Matthew Leaky, and daughter Abigail, wife to Thomas Powers. The Fosket family have disappeared from Charlestown, and have not been known there for a half-century. Descendants are in Worcester and Berkshire counties . Joseph Frothingham, hatter, and Nathaniel, painter, were sons of Nathaniel Frothingham, the joiner, who married Hannah Rand, and left her a widow in 1749, with good estate. Their posterity hav...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.