Septuagenarian Pallonji Mistry, an Indian origin business magnate has topped Ireland's rich list with a worth of 3.9 billion pounds.
Mistry - who became an Irish citizen in 2003 through his Irish born wife - has interests in real estate, cars, heavy industry, tea and partly owns the Taj Mahal Hotel.
Mistry reportedly has 18.4 per cent stake in India's largest private conglomerate Tata Sons.