Martin Naughton

Press-shy aeronautical engineer built world's largest manufacturer of electrical heating appliances (stoves, electrical fireplaces, space heaters, decorative fires, water heaters). Founded Glen Electric in 1973; acquired Dimplex four years later. Became sole owner of Glen Dimplex in 2003. Estimated sales in 2010: $1.87 billion. Trustee emeritus at University of Notre Dame in Indiana.