Athenæ Oxonienses. The History of Oxford Writers. Vol. 1, p. 558

John Thornden

, sometimes written Thornton, was Doctor of Div. and several times Commissary or Vicechancellour of this University, while Dr. warham Archb. of Canterbury was Chancellour, viz. between the years 1506,Clar. 1514. and 1514. in which time he is often stiled Episcopus Syrynensis and Syrymensis (perhaps the same with Sirmium in Hungary) as being a Suffragan to the same Archbishop, which is all I know of him.