John Martin Seabrook, a successful businessman, sportsman and reviver of coaching, died on Feb. 11. He was 91.
Born in Bridgeton, N.J., Mr. Seabrook grew up on Seabrook Farms, which would become one of the largest industrialized farms in the world. He graduated from Princeton University (N.J.) in 1939 and went on to become the president of Seabrook Farms in 1954.