Margaret of Anjou England to prove himself before she followed. He did so, restoring Henry VI briefly to the throne on 3 October 1470. By the time Margaret, her son and daughter-in-law (Anne) were ready to follow Warwick back to England, the tables had again turned in favour of the Yorkists, and the Earl was defeated and killed by the returning King Edward IV in the Battle of Barnet on 14 April 1471. Margaret was forced to lead her own army at the Battle of Tewkesbury on 4 May 1471, at which the Lancastrian forces were defeated and her seventeen-year-old son Edward of
IEEE 1471 IEEE 1471 IEEE 1471 is a superseded IEEE Standard for describing the architecture of a "software-intensive system", also known as software architecture. In 2011 it was superseded by ISO/IEC/IEEE 42010:2011, "Systems and software engineering — Architecture description".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