Original sentence: From about 1857, however, the Donnelly family was inextricably wound up with the feud, starting with one significant incident involving Patrick Farrell (see below).It preceded the immigration of the Donnelly family from Ireland and continued for some 17 years after the famous massacre.The Biddulph feud was of such duration and savagery that it has no parallel anywhere else in Canada or the United States; this fact being the source of its notoriety
Edited sentence: From about 1857, however, the Donnelly family was inextricably wound up with the feud, starting with one significant incident involving a certain Patrick Farrell (see below).It preceded the immigration of the Donnelly family from Ireland, and continued for some 17 years after the famous massacre that is the subject of this page.The Biddulph feud was of such duration, savagery and lethality that it has no parallel anywhere else in Canada or the United States, this fact being the source of its fame (or notoriety, if you will)