Mary Tavy is a village with a population of around 600, located four miles north of
Tavistock in
Devon in south-west
England; it is named after the
River Tavy. There is an
electoral ward with the same name. Its population at the 2011 census was 1,559.
Mary Tavy used to be home to the world's largest
copper mine Wheal Friendship, as well as a number of
lead and
tin mines. It lies within
Dartmoor National Park. The village lies a mile or two north of
Peter Tavy; both were shown as separate settlements in the
Domesday Book entry of 1086.