I've got to get Bach

When officials of the Tower of London examined an old vault of crown jewels that is rarely opened-they found (according to historical records) there were jewels missing approximately from the year 1765.  This is from the time that one of Bach’s sons worked for Queen Charlotte.  Use your sleuthing skills to track down which of Bach’s sons may have had some connection to the Royal family!  You may use our handy time machine to go back in time and travel to parts of Europe to learn more about these composers!