Elizabeth Wyndham (néeIlive or Iliffe; c.1769 – 30 December 1822), styled the Countess of Egerton after 1801, was an English polymath. She was given an award from the Royal Society of Arts for the design for a "cross-bar lever" that she had invented, for the purpose of lifting stones.
Ilive became one of Wyndham's mistress in 1785. The earl lived openly with his various mistresses and acknowledged paternity of more than 40 illegitimate children.
They were married in 1801, but only one of their children, a daughter who died in infancy in 1803, was born in wedlock. Soon afterwards, the couple separated.
The children born to the couple prior to their marriage were:
William Wyndham Ilive (bapt. 13 September 1793 – bur. 20 February 1794)
Charlotte Henrietta Wyndham Ilive (11 April 1795 – 1870), who married John James King, the son of John King, and had children.
Colonel Charles Wyndham (1796–1866), who married Elizabeth Anne Hepburne-Scott, daughter of Lord Polwarth, but had no children.
Scientific interests
In 1798, Elizabeth Ilive submitted to the Royal Society of Arts the design for a "cross-bar lever" that she had invented, for the purpose of lifting stones. This resulted in the award of a silver medal. A portrait of Elizabeth, by Thomas Phillips, RA, is held at her former home, Petworth House. It depicts Elizabeth with a diagram of her invention.
Art
The artist William Blake lived near Petworth for a while, and Elizabeth is thought to have commissioned several works from him. The unnamed woman in Blake's Vision of the Last Judgment is believed to represent her.
Her husband, the earl, was a patron of J. M. W. Turner, and Elizabeth is believed to have assisted Turner with the creation of pigments in her own "laboratory". Evidence for this includes the existence of receipts for artists’ supplies, glass and earthenware retorts, imploding bottles, Magdeburg hemispheres, and yellow powder.
References
↑Haggarty, Sarah (2010). Blake's gifts: poetry and the politics of exchange. Cambridge, UK New York: Cambridge University Press. p.203. ISBN9780521117289.