Who dated Ingeborg Bachmann?

Ingeborg Bachmann (Austrian German: [ˈɪŋəbɔrɡ ˈbaxman]; 25 June 1926 – 17 October 1973) was an Austrian poet and author. She is regarded as one of the major voices of German-language literature in the 20th century. In 1963, she was nominated for the Nobel Prize in Literature by German philologist Harald Patzer.

Paul Celan (; German: [ˈtseːlaːn]; born Paul Antschel; 23 November 1920 – c. 20 April 1970) was a German-speaking Romanian poet, Holocaust survivor, and literary translator. He adopted his pen name (an anagram of the Romanian spelling Ancel) following the war and resided in France from 1949, becoming a naturalized French citizen in 1955.

Celan is regarded as one of the most important figures in German-language literature of the post-World War II era and a poet whose verse has gained an immortal place in the literary pantheon. Celan’s poetry, with its many radical poetic and linguistic innovations, is characterized by a complicated and cryptic style that deviates from poetic conventions.

Max Rudolf Frisch (German: [maks ˈfʁɪʃ] ; 15 May 1911 – 4 April 1991) was a Swiss playwright and novelist. Frisch's works focused on problems of identity, individuality, responsibility, morality, and political commitment. The use of irony is a significant feature of his post-war output. Frisch was one of the founders of Gruppe Olten. He was awarded the 1965 Jerusalem Prize, the 1973 Grand Schiller Prize, and the 1986 Neustadt International Prize for Literature.