With John C. Whitehead he was senior partner at Goldman Sachs from 1976 to 1984 and continued to lead the firm on his own until he retired in 1990, capping a 40-year career at the bank. His father, Sidney J. Weinberg, who led Goldman Sachs from 1930 to 1969 and in many ways defined the art of relationship banking on Wall Street. Mr. Weinberg’s son, John S. Weinberg,and is currently co-head of investment banking, has carried on the family tradition. John. L. Weinberg’s brother, Sidney J. Weinberg Jr., and his nephew Peter A. Weinberg have also held senior management positions at the firm. John Livingston Weinberg was born Jan. 25, 1925, in Scarsdale, N.Y., and went to Deerfield Academy, Princeton University and Harvard Business School. During his senior year at Deerfield, he joined the Marines and was soon leading troops in the Pacific while still a teenager. After beginning at Goldman, he would return to duty during the Korean War and was promoted to captain. He was a trustee at Deerfield and Princeton and honorary chairman of the John L. Weinberg Center for Corporate Governance at the University of Delaware. In addition to his son, Mr. Weinberg, who lived in Greenwich, is survived by his wife, Sue Ann; a daughter, Jean Weinberg Rose of Greenwich; and five grandchildren.