Mr. Nott was a pure-blood wizard, one of the original Death Eaters who served Lord Voldemort during the First Wizarding War. A widower and the father of the Slytherin student Theodore Nott, he was a wealthy and well-connected member of old wizarding society. Mr. Nott evaded imprisonment after his master's first fall but returned to service upon Voldemort's rebirth, ultimately being captured during the Battle of the Department of Mysteries and imprisoned in Azkaban.
Mr. Nott was a contemporary of Lucius Malfoy at Hogwarts School of Witchcraft and Wizardry, where he was part of Tom Riddle's early circle of followers, who would later become the first Death Eaters. His former Head of House, Horace Slughorn, later recalled him as a friend of Lucius Malfoy. Following the defeat of Lord Voldemort at the end of the First Wizarding War, Mr. Nott managed to avoid a sentence in Azkaban, much like many other wealthy Death Eaters who claimed they had acted under the Imperius Curse. In June 1995, upon Voldemort's return to power in the cemetery of Little Hangleton, Mr. Nott was one of the Death Eaters summoned by the Dark Mark. Voldemort noted his absence and questioned his loyalty, but Nott soon Apparated to the scene and rejoined his master's ranks, participating in the ceremony that restored Voldemort's physical body. A year later, in June 1996, Mr. Nott was part of the squadron of Death Eaters sent to retrieve the prophecy about Harry Potter and Lord Voldemort from the Department of Mysteries. During the ensuing battle, he fought against Harry Potter and his friends. In the Time Room, he grappled with Hermione Granger, who managed to use a spell that threw him against a cabinet, incapacitating him. He was further injured when a collapsing shelf of Time-Turners fell upon him. Following the arrival of Albus Dumbledore and members of the Order of the Phoenix, Mr. Nott was captured by the Ministry of Magic along with Lucius Malfoy and several other Death Eaters. He was subsequently tried and sentenced to Azkaban.
Mr. Nott is described as a “weedy-looking man” and a “widower”. This observation was made by Harry Potter when he viewed a memory of Nott's capture in Albus Dumbledore's Pensieve. As a loyal Death Eater, Mr. Nott was a firm believer in pure-blood supremacy and was willing to use violence to serve Lord Voldemort. His association with Lucius Malfoy and Horace Slughorn's recollection of him suggest he came from an old, influential wizarding family. He was present at major Death Eater operations, though his combat prowess appears moderate, as he was effectively subdued by a teenage Hermione Granger during the Battle of the Department of Mysteries.
The surname “Nott” may derive from the word “knot,” suggesting something tangled, complex, or difficult to undo, which could be a metaphor for the dark secrets and twisted loyalties of the Death Eater families. It may also be related to the Old English and Old Norse name “Cnut” or “Knut” (anglicized as Canute), a royal name associated with power.
Mr. Nott does not appear in the film adaptations of the *Harry Potter* series, although his son, Theodore Nott, has a minor, non-speaking role in several films.