Daniel Day-Lewis the second child of poet Cecil Day-Lewis (1904–1972) and his second wife, actress Jill Balcon (1925–2009). His older sister, Tamasin Day-Lewis (born 1953), is a television chef and food critic. His father, who was born in the Irish town of Ballintubbert, County Laois, was of Protestant Anglo-Irish descent, lived in England from the age of two, and was appointed Poet Laureate of the United Kingdom. Daniel's mother was Jewish; her ancestors were immigrants to England in the late 19th century, from Latvia and Poland. Day-Lewis' maternal grandfather, Sir Michael Balcon, became the head of Ealing Studios, helping develop the new
Cecil Day-Lewis has entirely invented the character. In his youth and during the disruption and suffering of the Great Depression, Day-Lewis adopted communist views, becoming a member of the Communist Party of Great Britain from 1935 to 1938. His early poetry was marked by didacticism and a preoccupation with social themes. In 1937 he edited "The Mind in Chains: Socialism and the Cultural Revolution". In the introduction, he supported a popular front against a "Capitalism that has no further use for culture". He explains that the title refers to Prometheus bound by his chains, quotes Shelley's preface to "Prometheus Unbound" and says