A-Z Challenge 2013: J is for Jagger

Many many people know of the famous rock star with 'Jagger' in his name, but only a little research shows the origin of this surname.  However, there are a couple of  variations:

1) A jagger was a peddler; the 'jag' referred to the pack on his back.

2) A jagger was a man who led packhorses; the 'jag' was the pack that the horse could carry on its back (probably coal).

And by the way: Joseph Jagger, the mill engineer, was the origin of the song "The Man Who Broke The Bank at Monte Carlo"...