Lucretia Prewett

Lucretia Melania Prewett (née Black) (born 1925-1992) was an English pure-blood witch and the first child and only daughter of Arcturus Black III and Melania Black (née Macmillan). She was a very mysterious girl, but as you got to know her, she would open up more to you. Her middle name is her mother's first name and people say she looked a lot like her mother. She married Ignatius Prewett a couple years after graduating Hogwarts but they never had any children together.