Archived at Harvard University’s Houghton Library1 is a volume entitled, ‘Transactions Relateing to Caledon Estate Since the Grant Thereof to William Hamilton, Esqr. by King Charles the 2D.’2 Actually this book may be best described as the ‘1752 Caledon Estate Lease Book’, listing the lands under lease held at that time by John Boyle, the 5th Earl of Orrery,3 in the vicinity the village of Caledon, Aghaloo parish, in the south-eastern corner of County Tyrone. The book inventories the outstanding leases held by the Earl at that time along with the corresponding lessees and those named whose life spans were used to set the tenure of the lease.

This book is a bound volume of 566 pages – most of which have entries. The entries are arranged alphabetically by townland. The last 15 pages of the book is an index to the 205 leases naming the corresponding lessees. This database comprises a transcription of this index.

The book also contains candid notes written in their own hands from Lord and Lady Orrery to their son, Edmund, who would inherit the estate in 1762. He would eventually become the 7th Earl of Cork and Orrery.

It appears that this volume was created in 1752 for Margaret, Countess of Orrery, who inherited the estate from her father, William Hamilton, in 1723. While the estate passed to John Boyle (as provided under the laws of Great Britain and Ireland at that time) when he married Margaret in 1738, the Countess continued to oversee the running of the Caledon estates up unto her death in 1756. Since this book represents the estate’s inventory of the leases and lessees in 1752, the volume’s title is misleading.

Most of the leases were for farmland surrounding Caledon and were let in May of 1735 by the then ‘spinster’ Margaret Hamilton. There are a few leases dating to her father’s time and several leases made after 1735.

Each entry copies the text from the original lease with its important information: the location (usually a townland), the acreage, the annual rent, the date of when the lease was put into effect and the name of the lessee. Typically, the tenure of the lease was for the lifetimes of one to three individuals named in the lease. The lease would expire after the deaths of those so named.

Most of the leases had provisions (‘covenants’) by which the lessee was required to make improvements to the property such as new dwellings, drainage ditches, the planting of trees and hedgerows, etc. Many properties incorporated bogs and the lease gave permission to the lessee to graze animals in the bog as well as to harvest peat – a common source of fuel.

In May of 1752 an inspection was performed of each of the properties to ascertain if the original covenants for improvements where in fact made. If discrepancies were noted, instructions were given to the lessee or another person to make corrections, typically within two years, or be penalized by an increase in the annual rent.