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Julian McMahon was born and raised in Australia, where he later relocated to the United States to pursue a flourishing career in film and television, captivating audiences worldwide. His remarkable journey to fame began with notable performances in acclaimed series such as Nip/Tuck, Charmed, and FBI, which undoubtedly filled his parents with immense pride. Julian is the son of the late former Australian Prime Minister, Sir William McMahon, and Sonia Rachel, Lady McMahon, both of whom left this world before Julian’s untimely passing in 2025.
In the following sections, discover fascinating details about Julian’s upbringing, familial ties, and the influences that shaped his life.
Discover the Life and Legacy of Julian McMahon’s Father, Sir William McMahon
Julian’s father, Sir William, often referred to as Billy McMahon, was a prominent political figure who held the esteemed position of Australia’s 20th Prime Minister. As a native of Sydney, he played a pivotal role in the Liberal Party of Australia, leading the party and serving in various ministerial roles for over two decades. Notably, he holds the record for the longest continuous political service in Australian history, highlighting his significant contribution to the nation.
Before entering the political arena, William served his country in the Australian Army. He achieved the rank of captain, later promoted to major, and bravely participated in World War II, showcasing his dedication to his nation and its values.
Unfortunately, Julian’s father passed away in March 1988, succumbing to natural causes in his sleep at the age of 80, leaving behind a significant legacy in both politics and family.
Understanding the Contributions of Julian McMahon’s Mother, Sonia McMahon
Sonia McMahon was not only a devoted mother but also a well-respected philanthropist and socialite. She is fondly remembered for her commitment to charitable initiatives and her active role in promoting various organizations that benefitted the community. Additionally, she served on the board of the Sydney Children’s Hospital, reflecting her dedication to improving the lives of children.
Before her marriage to William in 1965, Sonia pursued a career as an occupational therapist. Their relationship was characterized by a 25-year age difference, yet they remained devoted partners until William’s death.
Lady Sonia passed away at the age of 77 in April 2010 after a courageous battle with cancer. Reports indicate that she had been suffering from melanoma, a fast-growing form of skin cancer, before her death, as reported by The Sydney Morning Herald.
Tragically, Julian also faced a similar fate, as he too succumbed to cancer, although the specific type he battled remains undisclosed.

Exploring Julian McMahon’s Childhood and Family Dynamics
Julian was born in Sydney and grew up alongside his sisters, Melinda and Deborah. He attended the prestigious Sydney Grammar School, the same esteemed institution that his father once attended, ensuring a legacy of education within the family.
Interestingly, Julian did not initially aspire to become an actor. Instead, he harbored dreams of becoming a rugby player and pursued a path toward becoming an army cadet. In a past interview, he revealed that he briefly attended the University of Sydney to study law, later transferring to the University of Wollongong to focus on economics, but ultimately decided to embark on a career in modeling.
In an interview with the Herald Sun in January 2018, Julian candidly shared insights about his childhood experiences and the challenges of being raised in a political household.
“It wasn’t overly strict (in the McMahon household), but my parents were still learning how to navigate parenthood,” Julian reflected. “My father, born in 1908, had a vastly different upbringing compared to the era he was raising me in the 1970s. This generational gap likely caused a range of conflicting parenting styles.”
Unveiling Julian McMahon’s Role as a Father
Indeed, Julian was a devoted father to his daughter, Madison McMahon. He welcomed Madison into the world with his ex-wife Brooke Burns, highlighting his commitment to family life.
Insights into Julian McMahon’s Marriage to Kelly McMahon
In 2014, Julian married his wife, Kelly McMahon, and the couple maintained a relatively private life, often keeping their personal affairs away from the limelight. However, Kelly made appearances alongside Julian at select events and premieres throughout their marriage.
Before his union with Kelly, Julian was married to his first ex-wife, Brooke, from 1999 to 2001. Together, they welcomed their daughter Madison in June 2000, a testament to their connection during their brief marriage, as noted by Wake Forest University Athletics.
Prior to his marriage to Brooke, Julian was previously wed to Dannii Minogue from 1994 to 1995. Dannii is notably recognized as the younger sister of the iconic Kylie Minogue, further intertwining Julian’s life with the world of entertainment.
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