I've been hunting through 19^th-century Scottish newspapers, and found the following interesting snippet:
LONDON TUESDAY, MAY 15, 1849 The Prussian Minister and Madame Bunsen entertained last Friday at dinner the Duchess of Sutherland, the Duke and Duchess of Argyle, the Marquis of Stafford, Viscount and Lady Palmerston, the Hon. William and Mrs Cowper, Baron Heintze, and other distinguished guests. In the evening there was a select musical party, in which the principal performers of the German operas executed several pieces of national music, and M. Rulhart of Wurzburg, performed with great success on the interesting popular instrument of South Germany, the zitter, or German guitar, improved by himself. Rob MacKillop -- To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html