The Untold Story Of Fred Trump III: 5 Shocking Revelations From The Family’s Black Sheep

Frederick Crist "Fritz" Trump III, the grandson of the Trump family patriarch Fred Trump Sr. and nephew of former President Donald Trump, has emerged from decades of relative obscurity into the center of a major family controversy, primarily driven by the release of his 2024 memoir. As of late 2024 and early 2025, his status as a successful real estate executive and powerful advocate for people with disabilities has been overshadowed by the shocking allegations contained within his book, which detail a culture of cruelty and financial manipulation within one of America's most famous dynasties. His candid account has provided the world with a fresh, raw, and highly critical perspective on the family’s inner workings and the devastating consequences of their infamous inheritance disputes. The public's renewed interest in Fred Trump III is rooted in his unique position as a figure who successfully forged an independent path outside the Trump Organization while simultaneously being a direct victim of the family’s bitter financial feuds. His book, "All in the Family: The Trumps and How We Got This Way," not only serves as a tell-all memoir but also as a powerful advocacy tool, shining a light on the personal cost of the family’s actions, particularly concerning the medical care of his son, William Trump, who has severe disabilities. The following is a deep dive into his life, career, and the most recent updates on his ongoing battle with his powerful relatives.

Fred Trump III: Complete Biography and Profile

Frederick Crist "Fritz" Trump III is a successful real estate executive, author, and prominent advocate. He is the son of the late Fred Trump Jr., Donald Trump’s older brother, whose tragic death at age 42 from alcoholism is a central theme in the family’s history. Fred III has maintained a career and life largely separate from the political and media spotlight until the publication of his memoir.

• Full Name: Frederick Crist "Fritz" Trump III
• Born: November 15, 1962 (Age 63 as of late 2025)
• Place of Birth: Manhattan, New York
• Parents: Fred Trump Jr. (Father) and Linda Lea Clapp (Mother)
• Spouse: Lisa Trump
• Children: Three children, including son William Trump, who has a rare KCNQ2 mutation resulting in severe intellectual and developmental disabilities.
• Grandparents: Fred Trump Sr. and Mary Anne MacLeod Trump
• Aunts/Uncles: Donald Trump, Maryanne Trump Barry, Elizabeth Trump Grau, and Robert Trump (all deceased).
• Career: Real Estate Executive, Author, Disability Rights Advocate.
• Education: Reportedly attended Lehigh University.
• Notable Work: "All in the Family: The Trumps and How We Got This Way" (2024 Memoir).

The Shocking Allegations in the 2024 Memoir

The biggest update concerning Fred Trump III in 2024/2025 is the public fallout from his memoir, which offers an unvarnished account of his life and his fraught relationship with his powerful uncle, Donald Trump. The book title itself, "All in the Family: The Trumps and How We Got This Way," suggests a narrative of systemic dysfunction, and the contents have not disappointed those seeking a deeper understanding of the family’s dynamics.

The most widely reported and "appalling" revelation detailed in the book centers on a conversation Fred III had with Donald Trump regarding his disabled son, William. Fred III alleges that when he sought financial assistance for William’s complex medical expenses, Donald Trump suggested that he should simply "let him die" and move to Florida. This comment, which Fred III called "unfathomable cruelty," has become a flashpoint for criticism against the former President and has galvanized Fred III’s role as a disability advocate.

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The memoir also delves into the atmosphere surrounding the death of his father, Fred Trump Jr., in 1981, and the subsequent inheritance battles. Fred III paints a picture of a family culture where kindness was seen as a weakness and where financial success and ruthless ambition were the only values that mattered. This narrative aligns closely with the previous accounts of his sister, Mary Trump, highlighting a consistent pattern of behavior within the family’s inner circle.

The Heartbreaking Inheritance Battle and William Trump’s Medical Care

The core of the Trump family’s most public legal feud—and the issue that ties Fred Trump III’s personal life directly to the family’s financial empire—is the battle over the estate of Fred Trump Sr. When the patriarch died in 1999, Fred III and his sister Mary contested the will, arguing that their branch of the family had been unfairly cut out of a significant portion of the inheritance.

The retaliation from Donald Trump and his siblings was swift and brutal. In an act that Fred III describes as "unfathomable cruelty," the family immediately cut off the payments for the medical care of his son, William Trump. William, who was born hours after Fred Sr.’s funeral, suffers from a rare KCNQ2 gene mutation that causes severe intellectual and developmental disabilities, requiring lifelong, expensive care.

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This decision to weaponize William’s medical expenses—a move confirmed by Donald Trump himself, who admitted to cutting off the payments when Fred III "sued us"—forced Fred III into a protracted legal and financial struggle. The legal battle over the estate and the subsequent cutting of medical funds is not just a historical note; it is the central trauma that Fred Trump III and his wife, Lisa, have had to navigate. It is this experience that has fueled his advocacy work and his decision to finally speak out in his memoir, using his platform to champion the rights and dignity of disabled individuals and their families.

An Independent Career and Life as a Disability Advocate

Unlike many members of the younger generation of Trumps, Fred Trump III has successfully carved out a lucrative and independent career as a New York real estate executive outside of the family’s main business, the Trump Organization. This independence is a point of pride and a key theme in his memoir, allowing him to maintain a distance from the political and business controversies that have plagued his uncle.

His professional success, however, is now secondary to his passionate work as an advocate. The personal struggle to secure care for his son, William, has transformed Fred III into a vocal champion for disability rights. He and his wife, Lisa, have dedicated themselves to raising awareness and campaigning for better support and resources for families facing similar challenges. His memoir is a testament to this commitment, using the family's actions not just as a source of personal grievance but as a powerful illustration of the need for greater compassion and systemic change.

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This dual identity—a successful businessman and a dedicated advocate—makes Fred Trump III a unique and compelling figure in the ongoing narrative of the Trump family. His willingness to break the family’s decades-long silence and risk further estrangement by sharing his story provides a critical, human perspective on the high-stakes world of the Trump dynasty, cementing his status as one of the most important dissenting voices in the family’s history.