Definition of "Herr"

The principal singers we now learn are to be Mdlles. Krall and Jenny Meyer, Herren Schneider and Stepan.

1858 May 1, The Athenæum: Journal of English and Foreign Literature, Science, and the Fine Arts, number 1592, London, page 569, column 3

On a variety of drawings being lately exhibited for a new town hall in one of the German capitals, a certain design of Herren Schmidt and Stauch attracted considerable attention among the art-loving public of the Fatherland, but as it happened to become a subject of jobbery, and was not to be accepted in consequence, would have been hardly accessible to larger circles of connoisseurs, without the invention of the new art.

1862 November 14, “New Photolithographic Process”, in G. Wharton Simpson, editor, The Photographic News: A Weekly Record of the Progress of Photography, volume VI, number 219, London: […] Thomas Piper, […], page 546, column 1

They stand in the poses of the two provincials—Herren Müller and Schultze—whose conversations (and portraits) were a regular column in the satirical paper.

2014, Marsha Morton, Max Klinger and Wilhelmine Culture: On the Threshold of German Modernism, Ashgate Publishing, page 98