10 children Prosper Jean de Mestre Andre Cotteral de Mestre Helen Mary Williams nee de Mestre Sarah Louisa Wason nee de Mestre Melanie Isabella Lovegrove nee de Mestre Etienne Livingstone de Mestre Mary Ann Hart nee de Mestre Katherine Dorothy Ramsay nee de Mestre Louisa Jane Hutchison nee de Mestre
Mary Ann was born in Sydney onOctober 1801. Her mother was the former convict Mary Hyde who in 1855 took the Commissioners of City of Sydney to the House of Lords and won. Her father was Captain John Black , a ships officer and a privateer . 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 Anns mother moved in with a business associate of Mary Anns late father Simeon Lord a pioneer merchant and a magistrate in Australia, who became Mary Anns stepfather.
Source: Wikipedia