Calum Maclean
Maclean was born in Òsgaig, Isle of Raasay, Scotland, into a family of five boys and two girls. His father was Malcolm MacLean (1880–1951), who was a tailor. His mother, Kirsty (1886–1974), was the daughter of Sorley Mor Nicolson of Braes, Skye, and his wife, Ishabel.
Leon MacLaren
According to Practical Philosophy's (founded by MacLaren) web site MacLaren spent three months in the early 1970s traveling around the world visiting the SES affiliated schools. MacLaren's illness came during his final world tour. He was brought back to England from South Africa and died in a London hospital on 24 June 1994. According to his foundation web site, MacLaren wrote a book called "The Nature of Society". In 2009 MacLaren's former personal assistant, Dorine Tolley, published a biography of MacLaren's life called "The Power Within: Leon MacLaren, A Memoir of His Life and Work".