• William Mack Knight is an entrepreneur and technology executive with a net worth estimated at $150,000.
• He graduated from Princeton University with a degree in Evolutionary Biology and Ecology, and then completed his MBA at Columbia Business School.
• He is most famous for his two-year relationship with actress Emma Watson, who is known for playing Hermione Granger in the “Harry Potter” film series.
• Emma Watson has a net worth estimated to be over $80 million, and has worked on many projects post-Harry Potter including modelling, acting and as a UN Women Goodwill Ambassador.
• William and Emma split in 2017 and it is reported that their relationship was serious.

Known for movies

Short Info

Date Of BirthApril 15, 1990
FactShe achieved eight A* and two A passes in her GCSEs (exams English school pupils take in their last compulsory year of secondary school).
PaymentsEarned $125,000 from Harry Potter and the Chamber of Secrets (2002)

Who is William Mack Knight?

William Mack Knight was born in the United States of America, apparently about 1982, and is an entrepreneur as well as a technology industry executive, but probably better known for his two-year relationship with actress Emma Watson. She’s particularly noted for her portrayal of the character Hermione Granger in the “Harry Potter” film series.

The Wealth of William Mack Knight

William Mack Knight has a net worth estimated to be close to $1 million, based on his reputed yearly income of  $150,000, from his Silicon Valley position. He probably benefitted from the wealth of Emma Watson during their time together too, as in mid-2024, she has a net worth estimated to be over $80 million.

Education and Career

William enrolled into Princeton University and studied for a degree in Evolutionary Biology and Ecology. The university is often ranked among the top two in national universities, based on the US News & World Report, responsible for creating numerous achievers in various professions.

After graduating, he enrolled at Columbia Business School to complete a Master’s degree in Business Administration (MBA) . The school is a member of the Ivy League Columbia University, and is one of the oldest as well as one of the most selective business schools in the world, ranked among the top for its business program. Following the completion of his degree in 2004, he began working in Silicon Valley with Medallia Professional Services, a company that specializes in customer support, serving as a Senior Manager.

William Mack Knight

Ex-Girlfriend Emma Watson

Emma was born in Paris, though her family later moved to Oxfordshire, England where she was raised. She attended Dragon School, and at a young age aspired to be an actress, training as a student at Stagecoach Theatre Arts. The school was founded in 1988, and is now the largest network of performing arts schools for children, with over 48,000 students enrolled on a regular basis. She mainly performed in school plays, and trained during her free time.

She got her big break when she was cast in the “Harry Potter” films as Hermione Granger. The films are based on the novels by author JK Rowling, following the titular character and their friends as they navigate different adventures in a world of magic. She’s been a part of all the “Harry Potter” films, including “Harry Potter and the Philosopher’s Stone” up to “Harry Potter and the Deathly Hallows – Part 2” making up the main star trio along with Danielle Radcliffe and Rupert Grint. The series of films would become the third highest grossing worldwide. With all of her commitments to the franchise, she still worked on other projects during her free time.

Emma Watson Post-Harry Potter

After the last “Harry Potter” film, she started took supporting roles in several films. In 2012, she starred in “The Perks of Being a Wallflower” which is a coming of age story based on the novel of the same name, and follows the story of a teenager who goes through his first year of high school. The following year she worked on “The Bling Ring” which is based on the article “The Suspects Wore Louboutins” by “Vanity Fair”, telling the story of a gang known as the Bling Ring using the internet to track celebrities and steal from their homes.

During the same year, she played an exaggerated version of herself in “This is the End”. In 2017, she portrayed the character Belle in the live action adaptation of “Beauty in the Beast”. While working on acting, she split her time and continued her education, completing a degree in English literature from Brown University. She has also done modelling for companies such as Burberry and Lancome. She is a UN Women Goodwill Ambassador, and helped launch the HeForShe campaign which advocates gender equality.

Personal Life

Knight met Watson in 2015 and they began dating, with Emma liking him due to his lack of any association with Hollywood – she previously dated British Rugby player Matthew Janney for a year before she met Knight. The two shared a lot of interests, including a love for travel, adventure, and photography. She also maintains a fit body, spending a significant amount of time doing fitness-related activities. He also showed a sense of humor based on his social media accounts, though all the attention led him to set his accounts to private. The two have been spotted going to restaurants, watching musicals, and many other activities.

In 2017, it was reported that they had split up and were last seen together in New York. The relationship was reportedly serious as he introduced her to his parents, but things didn’t work out. Watson has refused to comment about their relationship, as she prefers to keep her privacy and be consistent about it.

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General Info

Full NameEmma Watson
Date Of BirthApril 15, 1990
Place Of BirthParis, France
Height1.65 m, 1.65 m
Weight50 kilograms
ProfessionActor, Model, Actor, Model
EducationBrown University, Worcester College, Oxford, Dragon School, Headington School, Oxford, Stagecoach Theatre Arts, Brown University, Worcester College, Oxford, Dragon School, Headington School, Oxford, Stagecoach Theatre Arts
NationalityBritish, British


ChildrenIsabelle Willis, Ace Willis
ParentsJacqueline Luesby, Chris Watson, Krista Stone, Jeff Stone
SiblingsNina Watson, Lucy Watson, Toby Watson, Alex Watson
PartnerSasha Farber


AwardsMTV Trailblazer Award, MTV Movie Award for Best On-Screen Duo, British Style Award, Teen Choice Award for Choice Movie: Liplock, People's Choice Award for Favorite Dramatic Movie Actress, Teen Choice Award for Choice Movie Actress: Sci-Fi/Fantasy, Britannia Award for British Artist of the Year, Teen...
NominationsMTV Movie Award for Best Kiss, MTV Movie Award for Best Female Performance, MTV Movie Award for Best Fight, MTV Movie Award for Best Musical Moment, People's Choice Award for Favorite Comedic Movie Actress, BFCA Critics' Choice Award for Best Young Actress, Kids' Choice Award for Favorite Movie Actr...
MoviesBeauty and the Beast, Colonia, Harry Potter and the Philosopher's Stone, The Perks of Being a Wallflower, The Bling Ring, Noah, Regression, Harry Potter and the Deathly Hallows – Part 1, Harry Potter and the Chamber of Secrets, Harry Potter and the Deathly Hallows – Part 2, My Week with Marilyn,...

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Source: IMDb, Wikipedia

As a Freelance Writer at Biography Pedia, I oversee the full writing process, from in-depth research to the development of compelling narratives, ensuring accuracy and excellence in our output. Our goal is to produce insightful profiles that deeply explore the lives of prominent figures in business, entertainment, and other fields. Through meticulous research and engaging storytelling, we spotlight the significant journeys and achievements of individuals who captivate and inspire our readers.

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