Ronald Marvin Loeb (September 24, 1932 – April 14, 2012) was a prominent corporate attorney and the father of hedge fund manager Daniel Loeb. Born in Denver, Colorado, to a Jewish family, he graduated summa cum laude and Phi Beta Kappa from UCLA, where he served as fraternity president, and attended Harvard Law School as a member of the Harvard Law Review. He served two years in the U.S. Army in Korea, attaining the rank of lieutenant. Loeb began his legal career in 1959 at Irell & Manella, starting the firm's corporate practice and becoming a partner in 1964, with a 38-year tenure as a corporate lawyer. Post-retirement, he served as general counsel for Williams-Sonoma at the request of its CEO and was a long-time outside director of Mattel, Inc. for over 30 years, including as interim president; his family ties to Mattel extended through his first wife Clare Spark, whose aunt was Ruth Handler, co-founder of the company and creator of the Barbie doll. Additionally, he sat on the Advisory Board of public radio station KPFK, served as President of the Pacific division of Outward Bound, advocated for fair labor conditions in India and China, was a member of the World Business Academy promoting corporate governance responsibility, and traveled to Asia for clients. Loeb was married twice: first to Clare Spark, with whom he had three children—Daniel, Shulamit, and Rachel—and later to Shirley Ross Loeb for 39 years, with whom he had two sons, Joshua and Gabriel. An avid athlete, he completed 11 marathons and was a cyclist. He built a house in Big Sur, California, which he called his 'spiritual home.' A skilled wood craftsman, he later became a sculptor working in clay after his 2004 Alzheimer's diagnosis and self-published a poetry collection titled The Well. He passed away at age 79 from natural causes.