Aubyn is a British-born and trained surgeon specializing in diseases of the heart and lungs in children and adults. Married to a British nurse, Christine, they have two children. His UK training included a full scientific study in children’s heart surgery, leading to the “Master of Surgery” award, (the University of London, UK) and clinical experience at Great Ormond Street Children’s Hospital, Guy’s hospital in London. First hand medical war experience was obtained on being invited to set up a heart surgery unit in the Iran- Iraq war in 1987-8. In the USA he joined Dr. Albert Starr’s unit in Oregon, USA, as Visiting Professor. Specialist training in complex neonatal procedures was obtained at The Royal Children’s Hospital in Melbourne, Australia. He has led research into xenotransplantation and currently lectures as an instructor for the American Trauma Society. He is a faculty staff member of the Cardiovascular division of Oregon’s Health Sciences University in Portland, Oregon. In 1987, during his spare time, he founded CardioStart International, and collaborating with the other trustees, oversees the charity operations. He has led most of the international heart surgery missions to 19 countries in over 46 visits performing free pediatric and adult cardiac surgery together with colleagues.