Lucretia Black

Origin: Harry Potter
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Species: Human
Birthday:
Wife: Ignatius Prewett
Residence: Horwood Street 23 (22-91)
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Talent: Magic
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Import Date: 5(+)
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Lucretia Prewett (née Black) (1925–1992) was a pure-blood witch from the noble House of Black who was the eldest daughter of Arcturus Black III and Melania Macmillan, and the older sister of Orion Black. She married Ignatius Prewett and never had any children.

She went to Hogwarts School of Witchcraft and Wizardry in 1936 or 1937, where she was sorted into Slytherin house.[2]
She married Ignatius Prewett[1], making her the aunt of Gideon, Fabian, and Molly Prewett (later Weasley)[3]. It is unknown if she was close to her relatives by marriage.
She was also Sirius and Regulus Black's biological aunt and a second cousin of Arthur Weasley, Molly's husband.
She died in 1992 and is depicted on the Black family tree tapestry.