Kenneth Charles Marion Rexroth (December 22, 1905 – June 6, 1982) was an American poet, translator and critical essayist. He is regarded as a central figure in the San Francisco Renaissance, and paved the groundwork for the movement. Although he did not consider himself to be a Beat poet, and disliked the association, he was dubbed the "Father of the Beats" by Time Magazine. He was among the first poets in the United States to explore traditional Japanese poetic forms such as haiku. He was also a prolific reader of Chinese literature.
Rexroth had two daughters, Mary (who later changed her name to Mariana) and Katharine, by his third wife, Marthe Larsen.
Rexroth was born Kenneth Charles Marion Rexroth in South Bend, Indiana, the son of Charles Rexroth, a pharmaceuticals salesman, and Delia Reed. His childhood was troubled by his father's alcoholism and his mother's chronic illness. Rexroth was homeschooled by his mother, and by age four he was reading widely in the Classics. His mother died in 1916 and his father in 1919, after which he went to live with his aunt in Chicago and enrolled in the Art Institute of Chicago.
He spent his teenage years as an art student and soda jerk, along with other odd jobs. In 1923–1924 he was imprisoned during a raid on a Near North Side bar that he frequented; the police alleged he was part owner of a brothel. He lived in a decrepit jail cell under the care of four black cellmates until his legal guardian could bail him out.
While in Chicago, he frequented the homes and meeting places of political radicals, quickly identifying with the concerns of an agitated proletarian class and reciting poetry from a soapbox to crowds on street corners downtown.
An aborted attempt at a trip around the world with a friend piqued his interest in the American Southwest, and he began a tour through Kansas, Colorado and New Mexico, moving up and down the eastern foothills of the Rocky Mountains.