Mark was born in Philadelphia Dec. 29, 1932, attended Pomfret School, and grew up hunting, fishing, and loving the outdoors. At Princeton he majored in history, joined Ivy Club, and participated in freshman and JV crew. His senior-year roommates were Seth Harvey, Bill Somerville, and Hamilton Robinson.
After graduation he joined the Navy, serving with Underwater Demolition Team 21. He spent his military service maintaining a portion of the DEW line, the Distant Early Warning system of radar stations located at the edge of the Arctic, and participated in the landing of the Marines in Lebanon during the Beirut crisis of 1958.
After earning a medical degree from the University of Pennsylvania, he spent a year at the Schweitzer Hospital in Haiti, which inspired a career in tropical public health. Mark received an MPH at Harvard and a D.Phil. from Oxford. He spent his career in teaching and program development at Harvard and Tufts before retiring in 1995.
Mark had a profound interest in social, environmental, and humanitarian causes. He believed that health problems are societal and economic problems, and took issue with the perception that public health is subservient to the larger field of medicine.
Mark is survived by his four children, Markley Jr. ’83, Allison, Christopher, and Julie; seven grandchildren; sister Robin Hambro; and half-brother Jerry Strawbridge.