Mary Ann Black

Mary Ann de Mestre (; 1 October 1801 – 11 July 1861) was the wife of Prosper de Mestre (1789–1844) a French-Australian Sydney businessman in the early 19th century; and the mother of Etienne Livingstone de Mestre (1832–1916) the trainer of the racehorse Archer who won the first and second Melbourne Cups in 1861 and 1862, and an Australian horse trainer. It was on her property of "Terara" on the Shoalhaven River near Nowra on the South Coast of New South Wales that Etienne established a horse stud, stable and racecourse.

Early life Mary Ann Black, was born in Sydney on 1 October 1801. Her mother was the former convict Mary Hyde (1779–1864) who in 1855 took the Commissioners of City of Sydney to the House of Lords and won. Her father was Captain John Black (1788–1802), a ship's officer and a privateer (state-sanctioned pirate). Mary Ann was their second child, and only daughter. Her father died in 1802 when his ship the Fly was lost at sea with all hands. After this Mary Ann's mother moved in with (and later married) a business associate of Mary Ann's late father Simeon Lord (1771–1840) a pioneer merchant and a magistrate in Australia, who became Mary Ann's stepfather. In July 1807 Mary Ann was baptised at St Philip's Church in Sydney.

Her stepfather Simeon Lord held land in trust for Mary Ann and her brother, land that backed onto the Tank Stream and had originally been leased by their late father Captain John Black, where Mary Ann and her brother had been born, and where her mother had been living prior to her relationship with Simeon Lord. On her marriage Mary Ann received her portion of the land in George Street, Sydney as a dower.

Marriage to Prosper de Mestre Mary Ann married at the age of 19 on 1 March 1821 at St Philip's Church in Sydney to Prosper de Mestre who was 12 years her senior, and a business associate of her stepfather Simeon Lord. Prosper, a merchant like her stepfather, was a good catch, and the large family was well and luxuriously provided for, becoming an important part of the fabric of Sydney in the 1820s to the 1840s. Her husband eventually owned properties in Sydney, and elsewhere in New South Wales, including at Shoalhaven on the South Coast. Mary Ann was also a good catch for de Mestre, with her stepfather Simeon Lord's connections being invaluable to de Mestre's business dealings.

When her husband Prosper de Mestre became insolvent in 1844, and most of his land and property needed to be auctioned to pay his debts, Mary Ann moved to prevent the Shoalhaven properties being sold. As the George St. property had been her dower,

Later years Mary Ann Black was a widow for 16 years before her death on 11 July 1861. She left a will that divided her property amongst her children. Millbank was left to Prosper John de Mestre, along with the steam mill and premises which he was occupying at the time. The Terara House and property was left to Andre and Etienne de Mestre, and the 7 girls each received a portion of land. Mary Ann was buried on the Terara property next to her husband Prosper de Mestre on land that she had donated to the church. Against her stated wishes, the land has been sold by the church, and the exact location of the graves is now lost.

Family descendants Black's other descendants include: Sarah Melanie de Mestre (1877–1961) who distinguished herself as a nurse in France and Flanders in World War I, and whose decorations included the Royal Red Cross which was presented to her at Buckingham Palace by King George V on 3 June 1918 (the King's birthday). Roy de Maistre, CBE (1894–1968), a successful Australian artist. Guboo Ted Thomas (1909–2002) an Aboriginal leader, and the last initiated tribal elder on the South Coast of New South Wales. Margaret Augusta de Mestre (1915–1942), a nurse who was killed in action on a hospital ship on 26 February 1942 in the bombing of Darwin during World War II. Neville de Mestre (c.1938–present), an Australian mathematician and author, Emeritus Professor of Maths at Bond University, and who has held the titles of World Iron Man champion in the 60–64 age group, and Australian and World Masters surfing champion in the over-65 group for body surfing; Lloyd Nolan Hornsby (1947–present), an Aboriginal artist.