At the age of twelve, Harriet joined her father's household and was included as part of his family; she married George Osborne in 1824, but died before he became the 8th Duke of Leeds.
At the age of twelve, Harriet joined her father's household in Staffordshire and was included as part of his family. After accompanying him to the Netherlands, she met and married George Osborne in 1824 with whom she had eleven children, but died before he became the 8th Duke of Leeds.