Definition of "chauncellor"

We have in the Wiſedome and Dexteritie of, our right truſty and wellbeloved Counſellor, Thomas Lord Elleſmere, and for certen other eſpeciall Cauſes Us moving, have given and graunted unto the ſaid Thomas Lord Elleſmere the Office of our Lord Chauncellor of England, and given Aucthority to the ſaid Lord Elleſmere to heare examyne and determyne Cauſes Matters and Suytes as ſhall happen to bee, as well in our Chauncery as in our Starchamber, like as the Chauncellor of England or Keeper of the Greate Seale of England, [...]

1603, Thomas Rymer, Robert Sanderson, “De Liberatura pro Domino Cancellario Angliæ”, in Fœdera, Conventiones, Literæ, et Cujuscunque Generis Acta Publica, inter Regis Angliæ, […], 2nd edition, book XVI, London: Per J[acob] Tonson, published 1727, page 541, column 1