Margaret of Anjou Margaret of Anjou Margaret of Anjou (; 23 March 1430 – 25 August 1482) was the Queen of England by marriage to King Henry VI from 1445 to 1461 and again from 1470 to 1471. Born in the Duchy of Lorraine into the House of Valois-Anjou, Margaret was the second eldest daughter of René, King of Naples, and Isabella, Duchess of Lorraine. She was one of the principal figures in the series of dynastic civil wars known as the Wars of the Roses and at times personally led the Lancastrian faction. Owing to her husband's frequent bouts of insanity, Margaret
IEEE 1471 IEEE 1471 IEEE 1471 is a superseded IEEE Standard for describing the architecture of a "software-intensive system", also known as software architecture. In 2011 it was superseded by ISO/IEC/IEEE 42010:2011, "Systems and software engineering — Architecture description". IEEE 1471 is the short name for a standard formally known as ANSI/IEEE 1471-2000, "Recommended Practice for Architecture Description of Software-Intensive Systems." Within Institute of Electrical and Electronics Engineers (IEEE) parlance, this is a "recommended practice", the least normative of its standards. In 2007 this standard was adopted by ISO/IEC JTC1/SC7 as , "Systems and Software Engineering -- Recommended practice for architectural description