Copy Draft Lease of Mona Mine from the Rt. Hon. Henry Bayly, Earl of Uxbridge, to John Henry Vivian of Truro, Cornwall, esq Copy draft lease from the Rt. Hon. Henry Bayly, Earl of Uxbridge, to John Henry Vivian of Truro, Cornwall, esq., of the copper mine known as the Mona Mine. Term: 21 years 29 September 1811