George Fisher Russell Barker, Dictionary of National Biography… (1888)
“ As the intimate friend and trusted lieutenant of Pitt, Dundas fills an important place in the political history of the age in which he lived. Without any gift of eloquence, and in spite of his broad Scotch accent and ungraceful manner, he was a steady debater and a lucid and argumentative speaker. Deficient alike in refinement and in literary taste, he was possessed of great political sagacity and of indefatigable industry. In his private life he was frank and straightforward in character, convivial in his habits, and utterly indifferent about money. ”
