Augusta Emma Wilde, Baroness Truro

Augusta Emma Wilde, Baroness Truro (née d'Este), was born on 11 August 1801 and died on 21 May 1866. She was the daughter of Prince Augustus Frederick, Duke of Sussex, and Lady Augusta Murray. Her maternal grandparents were John Murray, 4th Earl of Dunmore, and Lady Charlotte Stewart.

Her parents were married in Rome and later in London at St George's, Hanover Square. Following her father's death, her brother, Augustus d'Este, claimed the dukedom; however, the House of Lords rejected the claim due to the invalidity of their father's marriage, which was contracted without the Crown's consent, contravening the Royal Marriages Act 1772.

In 1845, Augusta d'Este married Sir Thomas Wilde, who later became Baron Truro. She was 44 years old at the time. Sir Thomas Wilde was born on 7 July 1782 and died on 11 November 1855. He had three surviving children from his first marriage, but Augusta did not have any children with him.

Later in life, Lady Truro was associated with Ramsgate, Kent, residing at Mount Albion House on the East Cliff. She owned a significant amount of property primarily within the Mount Albion Estate. She suffered from severe episodes of asthma in her later years and generally spent the autumn months on the European continent. Her primary residence later changed to her townhouse in Eaton Square, London.

She died suddenly on 21 May 1866, eleven years after her husband's death. The Thanet Advertiser noted her as a person of strict business habits and somewhat reserved in manner, with a high level of general knowledge. She lived a modest life while in Ramsgate, characterized by simplicity and privacy.

Her funeral was held on the afternoon of 28 May 1866 at St Laurence Church in Ramsgate. She was interred in the family mausoleum, which is designated as a Grade II listed building. At her death, she left an estate valued at approximately £70,000, with over £40,000 allocated for charitable purposes.