Illogan (Cornish: Egloshal)is situated in the Deanery and Hundred of Penwith. In the early 19th century, it was bounded on the north by the sea, and St Agnes, on the east by St Agnes and Redruth, on the south by Wendron and Camborne, and on the west by Camborne and the sea. Named after an obscure Cornish saint, St Illogan parish stretches south from the north coast of Cornwall and is between the towns of Camborne and Redruth. The parish contains Portreath, originally called Basset's Cove, a quiet fishing village situated about a mile and a half to the north-west of Illogan Churchtown, and which was developed in the 18th and 19th centuries into a port with a railway connecting to the Pool and Hayle Foundry. Copper ore was exported to Swansea for smelting and coal and iron were imported for the mines in Cornwall.
Richard Trevithick, the celebrated Cornish Engineer who was the inventor of the Cornish Steam Engine, used both in mining and locomotive transport. He was born in Illogan on 13th April 1771 and, on 7th November 1797, he married Jane Harvey, the daughter of the owner of Harvey's Iron-Foundry at Hayle.
Out of this parish and St Agnes was formed the ecclesiastical district of Mount Hawke, which was gazetted on 4th July 1846.
Most parish and church description(s) on these pages are from Lake's Parochial History of the County of Cornwall by J Polsue (Truro, 1867 - 1873)