 Castle Horneck derives from "Castelhornek" in a 1335 manuscript and "Kestel Hornek" from a 1395 manuscript.Also referred to as Castle Hornocke (Early Modern English) and Iron Castle; it may be the site of a castle, which may have existed, near Penzance.Castle Horneck is said to have been built by the Tyes family in the 12th century, and in the 13th and 14th centuries the Tyes were the Lords of the Manor of Alverton.