Short answers, pulled from the story.
Nikolay Onufriyevich Lossky, also known as N. O. Lossky, was a Russian philosopher and a representative of Russian idealism, intuitionist epistemology, personalism and axiology. He named his own philosophical system intuitive-personalism and was the father of the theologian Vladimir Lossky.
Nikolay Lossky died on the 24th of January 1965. He had moved to France in 1961, after the death of his son, and spent the final four years of his life there in illness.
Nikolay Lossky was exiled from the Soviet Union in 1922 as a counter-revolutionary, placed aboard the group of expulsions known as the Philosophers' Ship. His public criticism of post-revolutionary excesses, combined with his return to the Russian Orthodox Church, had already cost him his professorship in philosophy.
Nikolay Lossky called his philosophical system intuitive-personalism. He also labeled his theory of knowledge, or gnosiology, Intuitivist-Personalism, built around the idea that all is immanent in all.
After his exile, Nikolay Lossky taught in Prague as a professor at the Russian University of Prague, in Bratislava, Czechoslovakia. From 1947 he taught theology at Saint Vladimir's Orthodox Theological Seminary in Crestwood, New York.
Ayn Rand studied classical philosophy under Nikolay Lossky at the University of Petrograd, also known as the University of St. Petersburg. In biographical reminiscences recorded in the early 1960s, she named him as the only teacher from that period she recalled.