Background
Theisen, Sylvester Peter was born on August 22, 1924 in Cold Spring, Minnesota, United States. Son of Math J. and Catherine (Kinzer) Theisen.
Theisen, Sylvester Peter was born on August 22, 1924 in Cold Spring, Minnesota, United States. Son of Math J. and Catherine (Kinzer) Theisen.
Bachelor in History, St. John's University, 1947. Master of Arts in Philosophy, Notre Dame (Indiana) University, 1949. Master of Arts in Sociology, Notre Dame (Indiana) University, 1950.
Doctor of Philosophy in Sociology, Notre Dame (Indiana) University, 1962.
Instructor in sociology, Chestnut Hill College, Philadelphia, 1950-1952; assistant professor sociology, Mount Mercy College, Pittsburgh, 1952-1955; director, Office of Cultural Affairs, Bonn, Federal Republic of Germany, 1955-1958; professor sociology, St. John's U., Collegeville, Minnesota, 1958-1966; reports officer, Food and Agriculture Organization (of the United Nations) (United Nations), Rome, 1966-1968; professor sociology, Food and Agriculture Organization (of the United Nations) (United Nations), Rome, 1968-1981; academic vice president, Food and Agriculture Organization (of the United Nations) (United Nations), Rome, 1981-1983; professor sociology, Food and Agriculture Organization (of the United Nations) (United Nations), Rome, since 1983.
Member American Sociological Association, American Maritain Society.
Married Vera Castelli. Children: David, Clara, Sylvia, Paul, Julia, Andre, Bruno, Carlo, Marcel.