Dolores Jane Umbridge was the eldest child and only daughter of Orford Umbridge, a wizard, and Ellen Cracknell, a Muggle, who also had a Squib son. Dolores’s parents were unhappily married, and Dolores secretly despised both of them: Orford for his lack of ambition (he had never been promoted, and worked in the Department of Magical Maintenance at the Ministry of Magic), and her mother, Ellen, for her flightiness, untidiness, and Muggle lineage. Both Orford and his daughter blamed Ellen for Dolores’s brother’s lack of magical ability, with the result that when Dolores was fifteen, the family split down the middle, Orford and Dolores remaining together, and Ellen vanishing back into the Muggle world with her son. Dolores never saw her mother or brother again, never spoke of either of them, and henceforth pretended to all she met that she was a pure-blood.

      An accomplished witch, Dolores joined the Ministry of Magic directly after she left Hogwarts, taking a job as a lowly intern in the Improper Use of Magic Office. Even at seventeen, Dolores was judgemental, prejudiced and sadistic, although her conscientious attitude, her saccharine manner towards her superiors, and the ruthlessness and stealth with which she took credit for other people’s work soon gained her advancement. Before she was thirty, Dolores had been promoted to head of the office, and it was but a short step from there to ever more senior positions in the management of the Department of Magical Law Enforcement. By this time, she had persuaded her father to take early retirement, and by making him a small financial allowance, she ensured that he dropped quietly out of sight. Whenever she was asked (usually by workmates who did not like her) ‘are you related to that Umbridge who used to mop the floors here?’ she would smile her sweetest, laugh, and deny any connection whatsoever, claiming that her deceased father had been a distinguished member of the Wizengamot. Nasty things tended to happen to people who asked about Orford, or anything that Dolores did not like talking about, and people who wanted to remain on her good side pretended to believe her version of her ancestry.

      In spite of her best efforts to secure the affections of one of her superiors (she never cared particularly which of them it was, but knew that her own status and security would be advanced with a powerful husband), Dolores never succeeded in marrying. While they valued her hard work and ambition, those who got to know her best found it difficult to like her very much. After a glass of sweet sherry, Dolores was always prone to spout very uncharitable views, and even those who were anti-Muggle found themselves shocked by some of Dolores’s suggestions, behind closed doors, of the treatment that the non-magical community deserved.

      As she grew older and harder, and rose higher within the Ministry, Dolores’s taste in little girlish accessories grew more and more pronounced; her office became a place of frills and furbelows, and she liked anything decorated with kittens (though found the real thing inconveniently messy). As the Minister for Magic Cornelius Fudge became increasingly anxious and paranoid that Albus Dumbledore had ambitions to supersede him, Dolores managed to claw her way to the very heart of power, by stoking both Fudge’s vanity and his fears, and presenting herself as one of the few he could trust.

      Dolores’s appointment as Inquisitor at Hogwarts gave full scope, for the first time in her life, for her prejudices and her cruelty. She had not enjoyed her time at school, where she had been overlooked for all positions of responsibility, and she relished the chance to return and wield power over those who had not (as she saw it) given her her due.

      Dolores has what amounts to a phobia of beings that are not quite, or wholly, human. Her distaste for the half-giant Hagrid, and her terror of centaurs, reveal a terror of the unknown and the wild. She is an immensely controlling person, and all who challenge her authority and world-view must, in her opinion, be punished. She actively enjoys subjugating and humiliating others, and except in their declared allegiances, there is little to choose between her and Bellatrix Lestrange.