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Umbridge is the surname of a wizarding family that has both muggle and magical heritage. They are related to the Muggle Cracknell family, and may be related to the pure-blood Selwyn family.
Known family members
Orford Umbridge - retired Ministry of Magic employee, worked at the Magical Maintenance Department, husband of Ellen Cracknell (later separated), father of Dolores and a son
Dolores Jane Umbridge - daughter of Orford and Ellen, Senior Undersecretary to the Minister for Magic, Defence against the Dark Arts Professor at Hogwarts School and Head of the Muggle-born Registration Commission. Later imprisoned in Azkaban for crimes against muggle-borns.