GEOLOGY, BY DR. BOASE.
This parish offers many objects of considerable interest to the geologist. It is entirely situated on rocks belonging to the calcareous series. In the southern part, its rocks consist of clay slates possessing various degrees of fissibility, from the most perfect roofing-slate of Delabole, to a slate that can only be separated into thick flags. Amongst these strata occurs an interesting rock, which appears to be composed of hornblende and compact felspar, and in some parts of hornblende and calcareous spar only. The latter variety is well known in the neighbourhood under the name of green freestone, and may be seen in the walls of the oldest churches. It is in situ in a croft near the pretty little waterfall of Nathan’s or Kneighton’s Kieve.
In the northern part of the parish, near King Arthur’s Castle, and in Bossiney Cove, the slate is very talcose, and is occasionally coated at its joints with calcareous spar. At the former place also occurs a large mass of compact felspar, but which is so much decomposed that its precise nature has not been ascertained. In the sea-cliffs are several slate-quarries, the quality of which, however, is inferior to the Delabole, and is known in the market by the name of cliff slate. In this slate are impressions apparently derived from shells, which have been referred to the genus producta. This is the only instance of a fossiliferous slate hitherto detected in Cornwall, though it is probable that others may exist, particularly between St. German’s and the Rame Head.
ST. EARTH.
HALS.
Is situate in the hundred of Penwith, and hath upon the north, Philack; east, Gwyniar; west, Breage, Geenlow, and St. Hillary. For the modern name, it signifies holy or consecrated ground or earth, referring to the church and cemetery thereof. In Domesday Roll this district was taxed under the jurisdiction of Trewinard, of which more under. At the time of the Inquisition of the Bishops of Lincoln and Winchester, 1294, into the value of Cornish Benefices, this church was neither extant or endowed, since it is not named in that inquisition, in Decanatus de Penwid. But in Wolsey’s Inquisition, 1521, it is called San Etghi, or Yrghe; id est, the holy charge, cure, or command, viz. of souls, and was then valued 14l. 1s. The patronage in the Dean and Chapter of Exeter; the incumbent Ralph. The rectory in Painter, by lease under the Dean and Chapter; and the parish rated to the 4s. per pound Land Tax, 1696, 125l. 19s. 2d.
Trewinard, taxed in Domesday Roll, by the name of Trewinerder, id est, the high, haughty, beloved town, alias Trewinar, id est, the town of the beloved lake or river of water, on which those lands are situate, viz. the Hayle River, gave name and origin to an old family of gentlemen surnamed De Trewinard, who flourished here for many generations in genteel degree down to the latter end of the reign of King Henry VIII. at which time John Trewinard, Esq. was Member of Parliament for the borough of St. Ives, and so became privileged against his creditors, being a man much encumbered with debts, who during the intervals of parliament kept house here and stood upon his guard, at which time one of his creditors obtained judgment and outlawry against him, after three terms in the county court, broke his
house, took his person, and carried him prisoner to the sheriff’s ward, where he remained till the next session of parliament, against which time he brought his writ of habeas corpus, and was brought up to Westminster in expectation of great damages against his creditor that put him in durance. Upon this restraint of Mr. Trewinard’s person, the house resolved not to sit, looking upon it as a breach of privilege, but entered before their rising into a grand committee for hearing this case pro and con, betwixt Trewinard and his creditor, when it appeared as aforesaid Trewinard was outlawed and so out of the king’s protection, and till that outlawry was reversed he could not lawfully sit as a member; by which expedient Trewinard was forced to compound with his creditor and sue forth the king’s pardon, and then appeared in parliament in statu quo prius. This John Trewinard had, as I take it, issue Martin Trewinard, steward of the stannaries, who had issue Deiphobus Trewinard, that in his rage or anger killed an innocent man and buried him secretly in Trewinard Chapel, of public use before the Church of St. Earth was erected; however, this fact was not so covertly carried, but the coroners of the shire had notice of it, who accordingly came to this place, opened the grave, took forth the body, and impannelled a jury thereon, who upon oath gave their verdict, that this party’s death happened by a wilful murder of Trewinard’s, whereupon he was carried before a justice of the peace, and upon further examination of this matter, had his mittimus made, and was accordingly sent to Launceston gaol, where he remained till the next assizes.