Not much was made known about Anne. However, it was confirmed that she was the daughter of an Earl (which was why she is referred to as Lady Anne as opposed to Mrs. Darcy), as well as the sister of Lady Catherine and an unnamed brother who inherited their father's title. Through her sister and brother, Anne was the aunt of Anne de Bourgh (her sister's only child) and Colonel Fitzwilliam (the younger son of her brother). It was also possible that her niece was named for her.
According to Lady Catherine, she and Lady Anne had planned an eventual marriage between their children while they were still in infancy. She even said that it was their favourite wish, but whether or not it is true was never confirmed.
How Anne is AddressedEdit
- Lady Anne/Lady Anne Fitzwilliam/Lady Anne Darcy - she was addressed as such by those who were not her intimates. As her father was an Earl, she would be called "Lady Anne" as a courtesy title.
- Miss Fitzwilliam/Miss Anne Fitzwilliam - if her father did not receive or inherit his title until after she was born, Lady Anne might have begun her days as Miss Fitzwilliam or Miss Anne Fitzwilliam.
- Mrs. Darcy - if she had married before her father received or inherited his title, Lady Anne might have been known as Mrs. Darcy at the beginning part of her marriage, up until her father became an Earl.