Hidden history at Rossmore Castle to be unearthed

Test trenching at Rossmore Park is unearthing clues to the history of Rossmore Castle as archaeologists prepare the ground for Monaghan's first community-led archaeological excavation, planned for summer 2027.

Built by the Westenra family in the 19th century, Rossmore Castle was occupied until the 1940s. However, after falling into disrepair, it was demolished in 1974, although much of it’s remains still lie beneath the ground.

Led by Monaghan County Museum and Monaghan council's Heritage Office, the work is helping identify the most promising locations for a larger public excavation at the site of the long-demolished castle.

Lead archaeologist Franc Myles said the test trenching had already produced encouraging results, including evidence of a wall: “Well we have definitely a wall, as you can see,” he said.

Comparing the discoveries with historical maps of the estate, Mr Myles said the reality beneath the surface could differ from what historical records suggest: “When you actually come and dig it it's sometimes quite different.”

One of the most significant discoveries so far is a fragment of imported pottery dating from the 17th century, offering a glimpse into activity at the estate centuries ago.

Heritage Officer Kara Ward described it as “one of the most exciting pieces” uncovered during the investigation. “For me it's nice because of the age,” she said.

Archaeologists hope future excavation work will uncover more about the Westenra family, who built the castle, as well as the people who also worked on the estate.

“We would also hope to see some evidence of the people who worked here. Perhaps the evidence that we turn up will show that story,” Ms Ward said.

Council Cathaoirleach Aidan Campbell said the loss of the building was unfortunate. “It was a beautiful-looking building. It reminds me of Castle Leslie. It's a shame we lost it.”

A Community Archaeological Day, meanwhile, is planned for next summer and will give members of the public an opportunity to take part directly in exploring the site.

Local schoolchildren have already visited to see the work and ask questions. Museum Curator Liam Bradley says their enthusiasm was a reminder of the excitement that discovering the past can inspire.

Inspired by fictional adventurer Indiana Jones, Liam Bradley initially studied archaeology before later branching into curation.

“Just seeing the kids interacting and asking the questions. I forget the passion and the excitement of that,” he said.

The project has been supported by Monaghan County Council, the Heritage Council and Coillte, with around €100,000 in additional funding secured through the SEUPB Common Threads programme.

With test trenching complete, archaeologists hope the work will guide the 2027 excavation and reveal more about one of Monaghan's significant historic sites.