Harriet Mathew (Mrs. Mathew), wife of the Reverend Anthony Stephen Mathew (also known by the pseudonym Henry Mathew), was an 18th-century London socialite and patron of the arts, who is considered an important early patron of John Flaxman and William Blake.
Alexander Gilchrist, in his Life of Blake, writes of her:
"Alas! for tenure of mortal Fame! This lady ranked among the distinguished blue-stockings of her day; was once known to half the Town, the polite and lettered part thereof, as the agreeable, fascinating, spirituelle Mrs. Mathew, as, in brief, one of the most 'gifted and elegant' of women. As she does not, like her fair comrades, still flutter about the bookstalls among the half-remembered all-unread, and as no lettered contemporary has handed down her portrait, she has disappeared from us. Yet the lady, with her husband, the Rev. Henry Mathew, merit remembrance from the lovers of Art, as the first discoverers and fosterers of the genius of Flaxman, when a boy not yet in teens, and his introducer to more opulent patrons.... She was an encourager of musicians, a kind friend to young artists. To all of promising genius the doors of her house, 27, Rathbone Place, were open."
John Thomas Smith was introduced to Blake by Mrs Mathew and heard him read and sing his poetry on several occasions; it was here that the qualities of his voice and reception of his audience were recorded in his contemporary biographical notes. Smith also notes she was "extremely zealous in promoting the celebrity of Blake" and as responsible, via her husband and his friends, for the printing of his Poetical Sketches (1783). Blake later satirised the Mathews, and the Johnson Circle and dinners, in 'An Island in the Moon'.
A vaguely detailed story regarding the Mathews early patronage of Flaxman was first given by J. T. Smith, and repeated by Blake and Flaxman's biographers. A collection of sketches bearing titles of 'Harriet Mathew' and her relations have been attributed to Flaxman.
- Gilchrist, Alexander (1880). The Life of William Blake. 1 (2nd ed.). pp. 43–44.
- Symons, Arthur (1907). "Records from Contemporary Sources: from A Book for a Rainy Day". William Blake (Symons) by Arthur Symons. New York: E. P. Dutton. pp. 387–9.
- Smith, John Thomas (1829). "Blake". Nollekens and his times: comprehending a life of that celebrated sculptor; and memoirs of several contemporary artists, from the time of Roubiliac, Hogarth, and Reynolds, to that of Fuseli, Flaxman, And Blake. 2. London: Henry Colburn. pp. 462–4.
- Bloom, Harold (2003). William Blake (Bloom's Major Poets). Chelsea House Publications. pp. 13–. ISBN 0-7910-6812-9. Retrieved 16 November 2010.
- 'An Identification of Some Early Drawings by John Flaxman'. Iolo A. Williams The Burlington Magazine Vol. 102, No. 687 (Jun., 1960), pp. 246-251
- Bentley, Jr., G. E. (Fall 2012). "The Mathews As Patrons". Blake: An Illustrated Quarterly. 46 (2).