1. The Royal Stewart or Royal Stuart tartan is the best-known tartan retrospectively associated with the royal House of Stewart, and is also the personal tartan of the British monarch, presently King Charles III.

2. The origins of the Stewart Clan can be traced back to Brittany in northwestern France. The Stewarts initially migrated to Scotland during the 11th century. The family's early history in Brittany is not as widely recognized as their later prominence in Scotland.

3. The Stewart surname has several alternative spellings, including Stuart. Both spellings have been used interchangeably throughout history, and the choice often depended on personal preference or regional variations. The Stuart spelling is more commonly associated with the later Stuart monarchs.

4. While the Stewarts were well-established in Scotland, they also made attempts to claim the English throne. James VI of Scotland became James I of England in 1603, uniting the crowns. However, it wasn't until the Glorious Revolution in 1688 that the Stewarts were replaced by the House of Orange in England.

5. After the execution of Charles I during the English Civil War, Charles II, the son, spent a period of exile in Europe. During this time, he sought refuge with various European monarchs, including the Spanish Habsburgs and the French Bourbon monarchy. Charles II was eventually restored to the throne in the English Restoration of 1660.

6. The Stewart Clan was closely associated with the Jacobite cause, which aimed to restore the exiled James II and his descendants to the thrones of England, Scotland, and Ireland. The Jacobites faced several uprisings, with the most notable being the Jacobite risings in 1715 and 1745. The latter was led by Charles Edward Stuart, commonly known as Bonnie Prince Charlie.