Dursley

From Hpwiki

The Dursleys are Harry's unpleasant Muggle family, and residents of Number Four, Privet Drive, Little Whinging, Surrey. They consist of Aunt Petunia, Uncle Vernon and Harry's cousin Dudley.

The Dursleys live in fear of anything "abnormal", and to them magic is about as abnormal as can get. Their greatest fear is that anyone might find out about their connection with the Potters, and therefore their connection with wizards and magic in general. Their fear makes Harry someone they seem to greatly dislike, despite their blood relation.

Marjorie Dursley is related to the Dursleys, being Vernon's sister.