Passage: Born to Jewish parents Nelly and Hugo Fried in Vienna, he was a child actor and from an early age wrote strongly political essays and poetry. He fled to London after his father was murdered by the Gestapo after the Anschluss with Nazi Germany. During the war, he did casual work as a librarian and a factory hand. He arranged also for his mother to leave Nazi occupied Austria, as well as helping many other Jews to come to the UK. He joined Young Austria, a left-wing emigrant youth movement, but left in 1943 in protest of its growing Stalinist tendencies. In 1944 he married Maria Marburg, shortly before the birth of his son Hans. In the same year his first volume of poetry was published. He separated from Maria in 1946, and they divorced in 1952. In the same year he married Nan Spence Eichner, with whom he had two children; David (b. 1958) and Katherine (b. 1961). Erich and Nan divorced in 1965. In 1965 he married for a third time, wedding Catherine Boswell with whom he had three children; Petra (b. 1965), Klaus and Thomas (b. 1969).

Question: When did he seperate from Maria?
1946