However, when Lily and her husband were murdered by Lord Voldemort, Petunia became the legal guardian of her nephew, Harry Potter, who was only an infant then.
She married a Muggle, Vernon Dursley and they had a son, Dudley.
During her childhood, she became resentful of her sister for being a witch, broke off contact with her sister, and refused to have any contact with the wizarding world. Petunia Dursley (née Evans) (pre 1960 – pre 2020) was an English Muggle woman, the eldest daughter of Mr and Mrs Evans, and the older sister of the Muggle-born witch Lily Potter.
' Mrs Dursley pretended she didn't have a sister, because her sister and her good-for-nothing husband were as unDursleyish as it was possible to be.' - Petunia's aversion to anything magical
