A well-known but rarely sighted portrait by Lucian Freud is heading to auction for the first time, after hanging in a legendary Irish house in the Wicklow mountains for more than 50 years. The 1956 painting, Head of a Boy, is a tender tribute to its sitter, the late Hon. Garech Browne, wealthy Guinness heir and lifelong friend of figurative British painter Lucian Freud. Executed at the Luggala estate by a 34-year-old Freud when Browne...