In Wharton's _List of Suffragan Bishops_, the following entry occurs:
"Robertus Silvester, _alias_ Pursglove, ep[=u]s Hullensis, 1537, 38."
But this is probably a mistake, as, in a short account of his life by
Anthony à Wood (vol. ii. col. 820., _Athen. Oxon._, edited by Bliss), I
find it stated, that "on the death of Rob. Sylvester about the beginning of
Queen Mary's reign, he was made Archdeacon of Nottingham, and suffragan
Bishop of Hull, under the Archbishop of York." Wood afterwards adds:
"After Queen Elizabeth had been settled in the throne for some time,
the oath of supremacy was offered to him, but he denying to take it,
was deprived of his archdeaconry and other spiritualities."