Topic summary
British flag
Extracted from the Wikipedia article Union Jack.
Terminology
When the first flag representing Britain was introduced on the proclamation of King James I in 1606, it became known simply as the "British flag" or the "flag of Britain". The royal proclamation gave no distinctive name to the new flag. At the funeral of King James in 1625 the flag was called the "Banner of the Union of the two Crosses of England and Scotland". The word jack was in use before 1600 to describe the maritime bow flag. By 1627 a small Union Jack was commonly flown in this position. One theory goes that for some years it would have been called simply the "Jack", or "Jack flag", or the "King's Jack", but by 1674, while formally referred to as "His Majesty's Jack", it was commonly called the "Union Jack", and this was officially acknowledged.