The Nuttall Encyclopedia
The daughter of Cymbeline, in Shakespeare's play of the name, a perfect female character, pronounced "the most tender and the most artless of all Shakespeare's women."
Wood, James, ed. Entry for 'Imogen'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/i/imogen.html. Frederick Warne & Co Ltd. London. 1900.