Having thought It right to leave behind me some account of my friends and benefactors, it is in a manner necessary that I also give some account of myself; and as the like has been done by many persons, and for reasons which posterity has approved, I make no farther apology for following their example. If my writings in general have been useful to my cotemporaries, I hope that this account of myself will not be without its use to those who may come after me, and especially in promoting virtue and piety, which I hope I may say it has been my care to practice myself, as It has been my business to inculcate them upon others.

My father, Jonas Priestley, was the youngest son of Joseph Priestley, a maker and dresser of woollen cloth. His first wife, my mother, was the only child of Joseph Swift, a farmer at Shafton, a village about six miles south east of Wakefield. By this wife he had six children, four sons and two daughters. I, the oldest, was born on the thirteenth of March, old style 1733, at Fieldhead about six miles south west of Leeds in Yorkshire. My mother dying in in 1740, my father married again in 1745, and by his second wife had three daughters.