Stelfox attends Rosetta Primary school, then continues his education at the Royal Belfast Academical Institution. In 1976 he begins to study architecture at Queen’s University Belfast (QUB). His first job is with the conservation architects, Consarc Design Group, which after a brief period of self-employment he rejoins in 1995. He becomes Chairman in 2002.
Among the many projects on which Stelfox has worked are the Parliament Buildings, often referred to as Stormont, Belfast’s Christ Church, the Odyssey Arena and the Ormeau Gas Works. Several of these projects have been premiated by the Royal Institute of British Architects (RIBA) and the Belfast Civic Trust.
In 1993 Stelfox leads the Irish Everest expedition which contains climbers from both jurisdictions on the island and is supported by both Sports Council as well as private companies. When he reaches the peak of Everest via the North Ridge on May 27, 1993, he becomes the first person from Ireland to do so.
Stelfox is past Chair and current board member of Mountaineering Ireland. He also is the current Chair of Outdoor Recreation Northern Ireland, a Belfast not-for-profit organisation who make it easier for people to responsibly enjoy the outdoors.
Barry Devlin, Eamon Carr and Charles O’Connor meet when they work at the Ark advertising company in Dublin. They are cajoled into pretending to be a band for a Harp Lager commercial but need a keyboard player. Devlin says he knows a Jim Lockhart who would fit the bill. The four enjoy the act so much that they decide to try being proper rock performers. They join guitarist Declan Sinnott, a colleague of Eamon Carr’s from Tara Telephone and, briefly, Gene Mulvaney to form Horslips (originally Horslypse) in 1970.
The band goes professional on St. Patrick’s Day 1972 having shed Mulvaney and released a single, “Johnny’s Wedding”, on their own record label, Oats. Declan Sinnott leaves soon after, primarily due to his annoyance at the group appearing in an advert for Mirinda orange drink. He is replaced by Gus Guest briefly, then Johnny Fean.
Following the release of six studio albums between 1972 and 1977, the ever-ambitious band tries to make it in the United States. In 1977 they produce Aliens, about the experience of the Irish in nineteenth-century America, which includes very little folk music. The Man Who Built America (1978), produced by Steve Katz of Blood, Sweat & Tears and The Blues Project fame, concerns Irish emigration to the United States and is commercially their most successful album. The heavier sound does bring some acceptance in America, but they lose their folk base and their freshness. Short Stories, Tall Tales (1979) is their last studio album and is panned by the record company and critics alike.
At a time when The Troubles are at its peak, Horslips plays gigs in both Northern Ireland and the Republic of Ireland without prejudice and are accepted everywhere. Their last recordings are from live performances at the Whitla Hall at Queen’s University Belfast in April and May 1980. A few months later, on October 12, 1980, they play their final gig in the Ulster Hall. They make no public announcement. They simply give an encore, The Rolling Stones‘ song “The Last Time,” and the final act is Charles O’Connor throwing his mangled fiddle into the audience. Ten years after they formed, they disband.
Although Horslips has limited commercial success when the band is playing in the 1970s, there is a revival of interest in their music in the late 1990s and they come to be regarded as one of the defining bands of the Celtic rock genre. There have since been small scale reunions including appearances on The Late Late Show and RTɑs Other Voices. The band reforms for two Irish shows in the Odyssey Arena in Belfast and the 3Arena in Dublin at the end of 2009 and have continued to play shows since then.