The following description is quoted from [Tonkin 1739] and must be read in the context of that date. The extract is taken from [Polsue 1868]. Other extracts are available online.
This church is a vicarage, valued in the King’s books, together with Lelant and Towednack, with which it passeth in presentation, at £22 11 10½; the collation in the Bishop of Exeter; the late incumbent Mr. Hawkins, now Polkinhorne. The sheaf in possession of Edward Noseworthy, Esq.
The town of S. Ives, in Mr. Carew’s days, was of small value or consequence for wealth, buildings, or inhabitants; although it now be much altered in these particulars, and equals several other corporations. Of old it hath been privileged by the Earls of Cornwall with the jurisdiction of a Court Leet, and with sending two Members to parliament; also with fairs and a weekly market.
On the island, or peninsula, north of S. Ives, standeth the ruins of an old chapel, wherein God was duly worshipped by our ancestors the Britons, before the church of S. Ives was erected or endowed; betwixt which island and the shore is an indifferent roadstead with some winds for ships to lie at anchor.
This town is particularly famous for the art of catching fish; in which trade or occupation of late they have been attended with good success, to the great advancement of their wealth and reputation. The chief inhabitants of which place were Mr. Hitchins, Mr. Trevilion, Mr. Beare, &c. In this port his majesty hath his Custom House, collector, surveyor, comptroller, and waiters, both for sea and land.
Trenwith, in this parish, is the seat of an old family of gentlemen, from thence denominated de Trenwith.