Williamsfield gets its name from the Williamsfield Estate which was a sugar plantation first established in the 1740s:
"according to what can be gathered from the old negroes (there being no early records), was first settled, nearly eighty years ago, by Mr. Needham, who was at that time a large proprietor in the Island; but while in its infancy (within three or four years after it was commenced), it was purchased by a Mr. Harvey, who came from Barbadoes, and was a merchant in Kingston"[1]
Higman, B. W. (2001), Jamaica Surveyed: Plantation Maps and Plans of the Eighteenth and Nineteenth Centuries, Mona: University of the West Indies Press