On January 11, 1938 as Mark Sullivan, he married Martha Sinclair Davidge in the District of Columbia.
Mark Sullivan Jr. was born in New York, the son of Mark Sullivan, a historian and journalist with the New York Herald Tribune. He grew up in the District of Columbia where he attended Sidwell Friends School. He was a graduate of the Lawrenceville School in New Jersey. In 1932, he graduated from Princeton University where he was a member of Phi Beta Kappa. In 1933, he began his brokerage career with Auchincloss, Parker & Redpath. He was a manager of the Advisory Investment Department from 1937 to 1950. He was the general partner in charge of the company’s District office when it merged to become Thomson McKinnon Securities in 1970. He was a Finance Chair of the Commissioner’s Public Works Review Committee, a member of the Budget Steering Committee of the Health and Welfare Council and a member of the Commissioners’ Citizens Advisory Council. In 1960, he was general manager of the Auchincloss when he was appointed by President Dwight D. Eisenhower to service on the District of Columbia Board of Commissioners. He served on the three-member board from September 1960 to March 1961. He was acting President for a short time and advocated reforms in the District budget and welfare procedures, construction of school and the right for District residents to elected Congressional representation. He was a member of the District Republican Central Committee and in 1964 was the director of the District Republican Platform Committee. From 1963 to 1969 he was the Director of the Greater Washington Board of Trade and from 1962 to 1972, Director of the Washington Center for Metropolitan Studies. In 1962 and 1963 he was President of the National Capital Area United Givers Fund. In the late 1960s, he was President of the Visiting Nurse Association and in 1984 was recognized for his outstanding service. He was a Director of the National Capital Area Health and Welfare Council. He served as a trustee of the Federal City Council, the United Planning Organization and George Washington University. During World War II he served as flag secretary for the Director of Navy Public Information and was discharged with the rank of Lieutenant Commander. He served on the board of the Beauvoir School in the District. He was a past President of the Chevy Chase Club and the Princeton Club of Washington and a past Governor of the Metropolitan Club. He died on Friday, May 2, 1986 at Georgetown University Hospital of a heart ailment. He was a resident of Bethesda, Maryland. He was preceded in death by his wife of 40 years, Martha S. Davidge Sullivan who died in 1978. Survivors included three sons of Bethesda, Nantucket, Massachusetts and San Rafael, California; three grandchildren and one sister, Narcissa Seigchrist of Randolph, Vermont. Memorial services were held at St. David’s Episcopal Church at 5150 Macomb Street Northwest.
Source: The Washington Times, Monday, May 5, 1986.
Martha Sinclair Davidge Sullivan
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