↑ "Records of the Society of Friends of the City of New York and Vicinity, from 1640 to 1800", in The New York Genealogical and Biographical Record. (New York, New York: New York Genealogical and Biographical Society) Vol. 3, p. 188.
The children of John Prier & Elizabeth, born at Killingworth [upon Matinecock]: ... Mary Prier was borne ye 4th 11th mo., 1685. [Note: In old-styles dates, the eleventh month is January. For comparison to the modern calendar, it corresponds to the following year. More info may be found here.]