In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Herodsfoot like this:
HERODSFOOT, a chapelry in Duloe parish, Cornwall; near West Looe. Pop., 453. The living is a vicarage. Value, £70.*
Additional information about this locality is available for Duloe
GB Historical GIS / University of Portsmouth, History of Herodsfoot, in Caradon and Cornwall | Map and description, A Vision of Britain through Time.
Date accessed: 25th April 2017
Click here for more detailed advice on finding places within A Vision of Britain through Time , and maybe some references to other places called " Herodsfoot ".