The second wife of Sir James Mackintosh whom she married in 1798; she was the sister-in-law of Josiah and John Wedgwood.

CORRESPONDENCE OF Lady Catherine Mackintosh [née Allen]:

Lady Catherine Mackintosh to John Whishaw, 22 December 1814 in The “Pope” of Holland House: Selections from the Correspondence of John Whishaw and his Friends 1813-1840 (London: T. Fisher Unwin, 1906)

Lady Catherine Mackintosh to John Whishaw, [1827] in The “Pope” of Holland House: Selections from the Correspondence of John Whishaw and his Friends 1813-1840 (London: T. Fisher Unwin, 1906)

Lady Catherine Mackintosh to John Whishaw, 12 November 1829 in The “Pope” of Holland House: Selections from the Correspondence of John Whishaw and his Friends 1813-1840 (London: T. Fisher Unwin, 1906)