Best known for transforming Slane Castle into one of Ireland’s most iconic music venues, Lord Henry - formerly The Marquess Conyngham - helped establish the Co Meath estate as a cultural landmark. Under his leadership, Slane hosted legendary concerts by acts including U2, The Rolling Stones, and Madonna, drawing generations of music lovers to its natural amphitheatre by the River Boyne.
The family paid tribute to Lord Henry’s lifelong dedication to preserving Irish heritage and promoting the arts, describing him as a "passionate steward of Ireland’s heritage" whose warmth and humour left a lasting impression.
They also thanked the staff of St James’s Hospital and the many carers who supported him over the last decade, adding that funeral arrangements will be private.
Lord Henry is survived by his wife, children, and grandchildren.
He will be remembered not only for his role in Ireland’s music and cultural life but also for his generosity, resilience, and legacy at Slane.
Take a look at our gallery tracing Lord Henry’s remarkable life and legacy through the years.
Bob Dylan at Slane Castle, 1984. Photo by NUTAN/Gamma-Rapho via Getty ImagesFans at the Bob Dylan concert in Slane Castle, 1984. Photo by Independent News and Media/Getty ImagesJimmy Greeley (left) and Lord Henry Mount Charles pictured at Slane Castle, 1985. RTÉ Photographic Archive.Lord Henry Mount Charles (left) and Jimmy Greeley, 1985. RTÉ Photographic Archive.Lord Henry Mount Charles and Lady Iona Mount Charles pictured as the Simple Minds concert crew set up at Slane Castle, 1986. Photo by Independent News And Media/Getty Images.Lord Henry Mount Charles and Lady Iona Mount Charles pictured as the Simple Minds concert crew set up, 1986. Photo by Independent News And Media/Getty Images.Queen at Slane Castle, (L-R: Freddie Mercury, Brian May and John Deacon), 1986. It was the band's final tour with Freddie Mercury as lead singer. Photo by Independent News And Media/Getty Images.Aerial view of the crowds at the Queen concert in Slane Castle, 1986. Photo by Independent News And Media/Getty Images.David Bowie performing at Slane Castle, 1987. Photo by Independent News And Media/Getty Images.Lord Henry Mount Charles and Lady Iona Mount Charles pictured in 1992. RTÉ Photographic Archive.Mary Black and Lord Henry Mount Charles on RTÉ's The Birthday Show, 1994. RTÉ Photographic Archive.Lord Henry Mount Charles on RTÉ's The Birthday Show, 1994. RTÉ Photographic Archive.Guests, including Lord Henry Mount Charles, who appeared on RTÉ's Time to Talk, presented by Marian Finucane, 1995. RTÉ Photographic Archive.Lord Henry Mount Charles pictured at home, 1998. RTÉ Photographic Archive.Lord Henry Mount Charles announces details Robbie Williams' Slane Castle gig, 1999. Rolling News.Lord Henry Mount Charles and Spice Girl Mel C at Slane Castle, 2000. Rolling NewsU2 playing Slane Castle, 2001, RTÉ Photographic ArchiveThe Stereophonics (left to right) Kelly Jones, Stuart Cable and Richard Jones, with Lord Henry Mount Charles (back left), 2002. PA Images.Lord Henry Mount Charles pictured in his study at home at Beau Parc, County Meath, 2004. RTÉ Photographic Archive.Lord Henry Mount Charles pictured in his study at Beau Parc, County Meath, in 2004. RTÉ Photographic Archive.Lord Henry Mount Charles before the Madonna concert at Slane Castle, 2004. PA Images.Madonna performing at Slane Castle, 2004. Eoin Clarke/AFP via Getty ImagesLord Henry Mount Charles announcing Eminem's gig at Slane Castle, 2005. Rolling News.Lord Henry Mount Charles with Swedish stunt motorcyclist Fredrik Johansson, 2007. PA Images.Lord Henry Mount Charles and Noel Gallagher announce the Oasis concert at Slane Castle, 2008. PA Images.Noel Gallagher, Oasis guitarist Gem Archer and Lord Henry Mount Charles, 2008. PA Images.Gem Archer, Lord Henry Mount Charles and Noel Gallagher, 2008. PA Images.Noel Gallagher and Lord Henry Mount Charles, 2008. PA Images.Lord Henry Mount Charles on the grounds of Slane Castle, 2009. PA Images.Lord Henry Mount Charles speaking at a press conference ahead of Oasis' concert at Slane Castle, 2009. PA Images.Lord Henry Mount Charles (left) and Adam Clayton at the Meteor Ireland Music Awards, 2010. Photo by Phillip Massey/WireImage.Lord Henry Mount Charles pictured at the Convention Centre Dublin, 2011. Photo by Irish Government - Pool/Getty Images.Lord Henry Mount Charles announcing the Metallica concert at Slane Castle, 2019. Rolling News.Lord Henry Mount Charles at Slane Castle, 2021. PA Images.
