Overview
- Michael Flatley announced his wife's death in an Instagram tribute on Monday, Oct. 5, 2026, saying his "heart is broken" and asking for prayers for their son and family.
- A family spokesperson confirmed O'Brien died peacefully at Beacon Hospital in Dublin after an illness and said funeral arrangements will be announced in due course.
- O'Brien, 52, built her career in Irish dance with early appearances in Riverdance and as the lead role 'Saoirse' in Lord of the Dance, making her loss notable within the dance community.
- Several outlets reported she was close to travelling to the United States for specialist treatment when she died, but that detail has not been confirmed by the family.
- The Flatley and O'Brien families asked for privacy as they grieve and expressed gratitude to Beacon Hospital staff for care provided over recent weeks.