In his illustrated story "Adventures of a bachelor" from 1875, Wilhelm Busch used the governess's cliché as a prim wallflower, who quickly brings her protégés to safety from the unseemly sight of Tobias Knopp bathing.
Wilhelm Busch (1832–1890), Abenteuer eines Junggesellen, Die stille Wiese: image 9, illustration, 1875; source: Busch, Wilhelm: Abenteuer eines Junggesellen, in: Wilhelm Busch: Werke: Historisch-kritische Gesamtausgabe, Hamburg 1959, vol. 2, p. 41, Zenodot Verlagsgesellschaft mbH, Zeno.org.