Who Are Gavin Newsom Siblings? Meet Brother And Sister Hilary Newsom Callan And Family Ethnicity Explored

Gavin Newsom’s Siblings: Hilary Newsom Callan’s Remarkable Contributions

Gavin Newsom, the Governor of California, has a sister named Hilary Newsom Callan. Hilary is a multifaceted individual with notable contributions and leadership qualities.1

Hilary Newsom’s Passion for Breast Cancer Awareness:

Hilary, an active HuffPost contributor, passionately writes about breast cancer awareness. This cause holds personal significance for her as, in 2002, she and Gavin experienced the loss of their mother to breast cancer. Hilary’s dedication to raising awareness for this cause reflects her commitment to making a positive impact.

Versatility and Achievements:

Hilary Newsom is known for wearing many hats, showcasing her versatility and skills. In August 2021, she made headlines by selling a Marin County home for $5.9 million. Beyond real estate, Hilary is deeply involved in philanthropy, notably associated with the PlumpJack Foundation and the Justice William Newsom Fund.

Philanthropy and Leadership During COVID-19:

Hilary’s philanthropic endeavors extend beyond real estate. She actively engages in charitable work, notably contributing to the PlumpJack Foundation and the Justice William Newsom Fund. In October 2020, her daughter, Talitha, wrote an article praising Hilary’s inspiring leadership at PlumpJack during the challenging times of the COVID-19 pandemic.

Professional Background:

Apart from her contributions to philanthropy, Hilary has a background in the fashion industry, having worked in Milan and New York. Her diverse professional experiences showcase her hard work, persistence, and dedication to promoting equity, serving as a source of inspiration for her family.

Gavin Newsom
Gavin Newsom ( Image: Instagram ) 

Gavin Newsom’s Brother: A Glimpse into Their Childhood

Gavin Newsom shares a childhood picture with his sister Hilary, providing a glimpse into their close bond.2

Shared Experiences:

The siblings, Gavin and Hilary, went through a challenging experience in 2002 when they lost their mother to breast cancer. This shared adversity strengthened their bond and shaped their perspectives on life.

Hilary’s Active Contribution:

Hilary, as an active HuffPost contributor, continues to contribute to various social issues. Her focus on breast cancer awareness and her diverse roles highlight her commitment to making a positive impact in the world.

Family Ties and Inspiration:

The Newsom siblings, bound by their shared experiences, draw inspiration from Hilary’s hard work, persistence, and dedication to equity. Her influence extends beyond familial ties, serving as a source of inspiration for the entire family.

60 Minutes Interview

Jennifer Siebel Newsom’s Reflection on ‘Survivor’s Guilt’ and Tragic Loss

Jennifer Siebel Newsom, wife of California Governor Gavin Newsom, recently shared her thoughts on the profound impact of her sister’s tragic death at a young age. In an interview with the Los Angeles Times, she discussed how this childhood incident shaped her life and fueled her drive for excellence.3

The Golf Cart Tragedy:

The heart-wrenching incident occurred during a family vacation in Hawaii, where the Newsom sisters, Jennifer and Stacey, were playing on golf carts. Tragedy struck when Stacey, aged 8 at the time, was hiding behind Jennifer’s cart, and it moved backward, resulting in Stacey’s death. This event left an indelible mark on Jennifer, who was just 6 years old at the time.

The Pressure to Be Perfect:

Jennifer revealed that the loss of her sister created a profound sense of “survivor’s guilt” and a constant pressure to be perfect. She believed that excelling in sports and academics was a way to make up for the void left by her sister’s absence. The burden of being “two daughters instead of one” drove her throughout her life.

Gavin Newsom
Gavin Newsom ( Image: Instagram )

Survivor’s Guilt and Aspirations:

Acknowledging the survivor’s guilt she experienced, Jennifer expressed her subconscious need to compensate for the loss by making a positive impact on others’ lives. As the First Lady of California, she felt a calling to contribute to societal betterment and described this aspiration as both challenging and aspirational.

Forgiveness and Advocacy:

As Jennifer began to forgive herself, a pivotal moment came when her youngest child reached the same age she was when her sister passed away.

Her passion for protecting children is evident in her work, aligning with her husband’s advocacy for gun control. Gavin Newsom’s proposed 28th Amendment aims to enforce universal background checks, raise the minimum gun-buying age to 21, implement waiting periods, and ban assault rifle sales to civilians.

Gavin Newsom’s Political Career and Achievements

  • Gavin Newsom’s income is derived from his extensive involvement in politics and business. His political journey began in 1995 during Willie Brown’s San Francisco mayoral campaign. He played a significant role in securing Brown’s victory and later served as the president of the Parking and Traffic Commission and as a member of the San Francisco Board of Supervisors.
  • Newsom’s tenure as Supervisor was marked by his advocacy for municipal railway reform, support for housing projects, and the successful implementation of the Care Not Cash voter initiative, redirecting resources to address homelessness.
  • In 2003, Newsom was elected as the mayor of San Francisco, backed by a substantial campaign fund of $1.6 million.
  • He went on to be elected lieutenant governor of California twice, hosting “The Gavin Newsom Show” from 2012 to 2013 and authoring the book “Citizenville” in 2013.
  • In 2018, Newsom was elected as the governor of California, facing both praise and criticism for his leadership during the COVID-19 pandemic.

Business Ventures and Investments

Newsom’s financial portfolio extends beyond politics. In 1991, he established PlumpJack Associates L.P. and later founded the PlumpJack Winery with support from family friend Gordon Getty. Newsom ventured into various businesses, including restaurants, wineries, and retail stores, employing over 700 individuals.4

Despite selling San Francisco businesses during his mayoral tenure, he retained ownership in ventures such as the PlumpJack Winery.

Gavin Newsom
Gavin Newsom ( Image: Instagram )

Assets and Real Estate

In 2011, Newsom and his wife acquired a property in Kentfield, California, for $2.225 million, later selling it for $5.895 million in 2021. Following his election as Governor in 2018, the couple purchased a $3.7 million house in Sacramento.

Social Media Presence

Gavin Newsom maintains a substantial social media following, with 805K followers on Instagram and 2.1 million followers on Twitter.

Personal Life

Newsom’s personal life includes his marriage to former San Francisco prosecutor Kimberly Guilfoyle in 2001, which ended in 2006. In the same year, he began a relationship with film director Jennifer Siebel. The couple tied the knot in 2008 and has four children.

Awards and Recognitions

Throughout his career, Newsom has received several awards, including recognition for Marriage Equality Advocacy in 2004, the Environmental Leadership Award in 2019, and the Leadership in Public Policy Award in 2020.

Read More: Claire Pearsall (Politician): Wiki, Age, Earnings And Net Worth, Husband And More

Gavin Newsom’s Family and Ethnicity


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A post shared by Gavin Newsom (@gavinnewsom)

Gavin Newsom hails from a diverse and accomplished family, with roots deeply embedded in San Francisco. His parents, Tessa Thomas and William Alfred Newsom III, had connections to Getty Oil, and his father served as a state appeals court judge. Newsom proudly identifies as a fourth-generation San Franciscan, cherishing his familial ties to the city.

Maternal Lineage and Scientific Legacy

On his maternal side, Newsom’s great-grandfather, Scotsman Thomas Addis, was a pioneering scientist in nephrology and a Stanford University medicine professor. This lineage reflects a rich history of scientific contributions.

Extended Family Connections

The family connections extend further, with Newsom’s aunt being married to Ron Pelosi, the brother-in-law of former Speaker of the United States House of Representatives, Nancy Pelosi.

However, the leader faced challenges during his childhood, including his parents’ divorce when he was three, and he coped with dyslexia throughout his education.

Gavin Newsom’s Education and Challenges

Despite challenges, Newsom excelled in sports and navigated dyslexia using audiobooks and verbal instruction. His early life experiences laid the foundation for his later resilience and dedication to public service.

Gavin Newsom’s Sibling: Hilary Newsom

Gavin Newsom does not have a brother; however, he shares a strong bond with his sister, Hilary Newsom. Both siblings have made significant contributions, with Gavin serving as the Governor of California and Hilary contributing to areas like breast cancer awareness.

Givan Newsom: Imagining a Brother

While Gavin does not have a brother, the hypothetical concept of a supportive and proud sibling adds a personal touch to the narrative of his achievements, showcasing the admirable traits and inspirational journey of this prominent leader.

Read More: Tim Sheehy (Politician): Wikipedia And Bio, Wife, Career And Net Worth

Gavin Newsom’s Family: A Closer Look at His Children

Gavin Newsom
Gavin Newsom ( Image: Instagram )

Gavin Newsom’s Reelection and Family

Gavin Christopher Newsom, a prominent figure in California, secured his position as the state’s governor through a successful reelection in 2022. Apart from his political endeavors, Newsom is a family man and shares a life with his wife, Jennifer Lynn Siebel Newsom, with whom he has four children.

Montana Tessa: The Firstborn

The couple’s first child is Montana Tessa, born on September 18, 2009. In 2023, she celebrated her 14th birthday. The choice of her first name holds sentimental value, commemorating the location of her parents’ wedding. Meanwhile, her second name pays homage to her paternal grandmother.

Hunter: Welcoming the First Son

On June 11, 2011, Jennifer Siebel and Gavin Newsom joyfully welcomed their first son and second child, named Hunter. As of 2023, Hunter is 12 years old. Notably, his middle name was not disclosed in the public birth announcement, adding an element of mystery to his identity.

Who is Jennifer Siebel?

Gavin Newsom
Gavin Newsom ( Image: Instagram )

Jennifer Siebel, born on June 19, 1974, in San Francisco, California, is a renowned documentary filmmaker and actress. Her career encompasses roles in movies like Mad Men and the musical adaptation of Rent. Apart from acting, she has made significant contributions as a producer, director, and writer in the documentary genre.

Career Highlights: Jennifer Siebel’s Contributions in Film

Jennifer Siebel’s involvement in the film industry extends beyond acting. She has actively participated in the production, direction, and writing of impactful documentaries. Notably, her documentary “Miss Representation” was released in 2011, addressing important societal issues.

Additionally, she has worked on projects like “The Mask You Live In,” showcasing her commitment to thought-provoking cinema.

Relationship with Gavin Newsom: A Love Story

Gavin Newsom, the current political figure, and Jennifer Siebel’s paths crossed in October 2006, thanks to a blind date arranged by a mutual friend.

The meeting sparked a connection that led to their engagement in January 2008. Their commitment to each other culminated in a wedding ceremony held in July of the same year, taking place in the picturesque setting of Montana. The love story between Gavin Newsom and Jennifer Siebel is a notable chapter in both their personal and public lives.

Also Read: Peter Obi (Politician): Ethnicity, Religious Faith, Career And More

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Shweta Achhara
Shweta Achhara

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