His grandfather was Henry Dering I (1639 - 1717), born England, in co. Dorsetshire, and immigrated to America circa 1660, living at Portsmouth, New Hampshire, married 2ndly, in 1676, Elizabeth Mitchelson, daughter of Edward Mitchelson.
Dering was a patriot, a supporter of the Declaration of Independence, member of the convention that approved New York's first state constitution and a member of the Congress of the independent United States of America.
The original N. Hurd dated plate was yet to be used by another member of the Dering Family in the first quarter of the XIX c., a grandson of Thomas Dering!
Nicoll Havens Dering  (1794-1867) from Utica, Oneida Co., New York, the son of General Sylvester Dering (1759-1820), the elder brother of Henry P. Dering, and Esther Sarah Havens, also used the Hurd plate of his grandfather Thomas with the name altered: Nicoll H. Dering (Allen #218).
But again, it seems Nicoll H. Dering used another bookplate also not listed by Dexter Allen. According to Hollis French it is the same Thomas Dering plate, in the third state, with date, name and signature erased. The new name was re-engraved in modern lettering  (not show).The specimen shown (above) though has a motto added – Sola Nobilitas Virtus – with the name inscribed below, looking as a modern engraving copying the old Hurd’s plate.
It was referred by Holis French as being in the bookplate collection of the «American Antiquarian Society» .
His engraving tools, according to Allen and were left by will to his nephew John Mason Furnass (1763 - 1804), a painter and engraver of Boston, Mass., who also made bookplates, namely for Eli Forbes .
We were fortunate to be helped by Mr. Matt Thomas a descendant of Sarah Dering, sister of Thomas Dering, who confirmed that according to Family correspondence (1898) the majority of the few plates then in existence belonged to members of the Dering family.
We would like to thank Mr. Matt Thomas for the information provided and for permission to reproduce the Dering bookplates which he most kindly provided.
 Nathaniel Sylvester (d. 1680) was a sugar merchant born in England who immigrated to America to Newport and being afterwards the founder of the town of Shelter Island (circa 1652). He married Grissell Brinley, daughter of Thomas Brinley, keeper of the accounts for both Charles I and Charles II. The Sylvesters are said to have been Royalists fleeing from Cromwell’s rule in England (source http://www.shelter-island.org/history.html).
 American Bookplate: A Guide to their Study (with a Bibliography by E. N. Hewins) Reprint of the 1895 ed. New York : Hacker Art Books, 1968; the bookplate is also discussed by Downs, Joseph, A Quillwork Hatchment, in «The Metropolitan Museum of Art Bulletin», Vol. 33, No. 12 (Dec., 1938), pp. 267-268.