She was born in about 1760[1] as Diana Dietz[2] and married Haydock Hill in 1781.
[3] Hill lived and worked in England and, after her first husband's death,[3] in Calcutta, India.
[4] In 1788, she remarried: her husband was Lieutenant Thomas Harriott of the 1st Native Infantry.
She returned to England, accompanied by Harriott, in 1806 and died in Twickenham on 10 February 1844.
[3] A miniature portrait of her second husband, Lieutenant Thomas Harriott, painted by her in 1791, is held at the Victoria and Albert Museum.