The Clogher Historical Society (CHS): www.clogherhistory.ie is a quality organization with a focus on research, history and preservation for counties Fermangh, Monaghan, South Tyrone, parts of South Donegal and West Louth. Keep in mind this geographic area crosses the border between the Republic of Ireland and Northern Ireland. County Fermanagh and South Tyrone are today in Northern Ireland.
The CHS boundaries are the Roman Catholic diocese of Clogher. Their core membership is from counties Fermanagh, Monaghan and Tyrone. However, they have an international membership also. They not only promote the history of the Clogher Diocese, but also worldwide immigration links from this region. The diocese boundaries actually cover County Monaghan, most of Fermanagh, parts of south and west Tyrone, south Donegal with small parts of counties Cavan and Louth.
The CHS publishes the reputable Clogher Record which can be found in many libraries worldwide. The CHS website has a link to an article index to the Clogher Record: www.clogherhistory.ie/Clogher-Record-Index
As a professional genealogist, I have used the Clogher Record for many years. Also, recently I was in need of some estate papers for a local landlord. I contacted the CHS and they found exactly what I needed and where these papers had been deposited. I was very pleased. I referred my question to them because I knew if they didn’t know the answer, they would know who would know the answer. Their help revolutionized this case I was working on!
I would recommend support of the CHS. It has been in operation since 1952, and has had time to research and publish some incredible findings.