The current Lough Rynn estate is built on the ancestral lands of Clan Maelsechlainn-Oge Mac Raghnaill, the pre-Conquest rulers of this part of County Leitrim known as Muintir Eolais.

"[1][8] The Mac Raghnaill family played an important role in the Nine Years War as allies of Aodh Mór Ó Néill in resisting the English conquest of Ireland.

Daniel Clements, an officer in Oliver Cromwell's army, had been granted land in County Cavan which had been confiscated from the Irish following the Cromwellian conquest of Ireland.

[11] In 1833, Robert Bermingham, Viscount Clements (son of the second Earl), built a mock Tudor revival house overlooking Lough Rynn.

The inability of tenants to pay rent during and after An Gorta Mór (the Famine) provided him with an opportunity to clear his estate and introduce more productive farming practices.

However, some six thousand men turned up from Longford, Westmeath, Roscommon, and across Leitrim on the day to defend the church, forcing Clements to back down.

[13] The Nation noted at this time that Lord Leitrim was "already famous for such proceedings towards his tenantry as not many even of his own order dare imitate.

[13] During the 1860s, hatred towards Sydney Clements grew in the surrounding area and stories began to be told of his mistreatment of the wives and daughters of local men.

In September 1860, James Murphy from Mohill fired a pistol at him, two days after sending him a note challenging him to a duel to 'take satisfaction for your ruffianly conduct towards my wife'.

In 1878 Sydney Clements engaged in a wholesale eviction of his tenants there, many of whom were starving as a result of the famine which hit northwest Ireland in 1878/79.

[14] Leitrim's assassination received widespread publicity in Ireland and abroad, with proponents of land reform using it as evidence of the need to protect tenants from the abuses of tyrannical landlords.

He added a new wing, built a Baronial Hall designed by Thomas Drew with heavy plaster cornices, a large ornate Inglenook fireplace, and a fretted ceiling and walls wainscoted in solid English oak.

[15] By 1952, when Marcus Clements took over the Lough Rynn estate, most of it had been sold off to former tenants under the land acts of the late nineteenth and early twentieth centuries.

[18] There are also sawmills, a farmyard, arboretum, green house, French stable yards, nature trails, and terraced gardens.

A right along the shore at this point will lead to the back entrance of the estate's centerpiece, the enormous three-tiered walled gardens which overlook the lake.