Lord Paddy Rossmore is being remembered as “very much a Monaghan person”.
The 90-year-old, whose family name is synonymous with the county, died on Tuesday.
Born William Warner Westenra in 1931, he became the 8th Baron Rossmore on his father's death in 1958.
He spent much of his life in London to be more involved in the arts, but returned to Ireland every summer, and was vocal in his support for Rossmore Forest Park, including the restoration of the mausoleum and the boundary walls.
Noel Kearney, the chairman of the Heritage Network in Monaghan told The Wider View that he was keen to see the local attraction protected.
The move to the UK was made permanent after the IRA burned down his family home in 1981.
Although he returned on occasion to a holiday home in Cork, and often secretly, Noel says it was never the same.
Rossmore founded the Coolmine drug and alcohol treatment centre in 1973, inspired by his then-girlfriend, the singer Marianne Faitfull’s attempts to quit her drug habit.
In 1982, he married Valerie Tobin and they had two children before their divorce.
Lord Rossmore died in his sleep on Tuesday and is survived by his two children.
