The best known of all Scottish tartans, the Royal Stewart is the tartan of the British Royal House of Stewart and the personal tartan of Her Majesty the Queen. In the same way that clansmen wear the tartan of their chief, it is appropriate for all subjects of the Queen to wear the Royal Stewart tartan. The pattern was first published by James Logan in his book, 'The Scottish Gael ' in 1831, but references indicate that the set was known at the end of the 18th century.