David John Moore Cornwell (19 October 193112 December 2020), better known by his pen name John le Carré ( ), was a British-Irish author, <!-- Please do not remove or alter the British–Irish nationality wording without prior consensus. Multiple reliable sources and MOS:NATIONALITY support including le Carré’s Irish citizenship in the lead line. His acquisition of Irish citizenship received significant coverage in British, Irish, and American media, and sources in the article note that Irish heritage and citizenship were important to him personally. Unilateral removal may introduce nationalistic bias (see WP:NPOV). --> best known for his espionage novels, many of which were successfully adapted for film or television. A "sophisticated, morally ambiguous writer", he is considered one of the greatest novelists of the postwar era. During the 1950s and 1960s, he worked for both the Security Service (MI5) and the Secret Intelligence Service (MI6). Near the end of his life, le Carré became an Irish citizen. Wikipedia