April 7, 1936 - September 3, 2018Kathleen "Margaret" Peng passed away peacefully on September 3, 2018 in Mill Valley, California. She was 82. Margaret was born in Four Marks in rural Hampshire, England, on April 7, 1936. Even though she was a child during World War II, her childhood was filled with happy memories of growing up in the English countryside. Her family eventually moved to Oxford where she studied the sciences at Milham Ford School. She then went onto University of Reading where she made many lifelong friends. In 1964, Margaret embarked on one of the biggest adventures of her life by moving to America. She eventually joined the lab of Dr. Neal Benowitz, a leading researcher in nicotine at San Francisco General Hospital. She fell in love and married Dr. Chin Tzu Peng, a professor at UCSF School of Pharmacy in December of 1983. Throughout her life, Margaret possessed a curious mind, always in constant pursuit of knowledge. In fact, she took classes at London School of Economics and during her retirement years she obtained an advanced degree in international relations from San Francisco State University. Margaret had a wide variety of interests, spanning many different disciplines. They ranged from art history and literature to scientific research and ornithology. According to her close friends, she was also excellent letter writer. She loved books, nature, and enjoyed tending to her garden in Mill Valley. She will always be remembered for her gentle nature, kindness, charm and thoughtfulness as she remained a steadfast source of support and love for family and friends.