Edward S. Gruson, 83, of Sherman, whose long career in medical education included leadership posts at Harvard University and Yale Medical School, died Feb. 25 at New Milford Hospital.

His wife, Susan Murphy Gruson, said the cause of death was a massive stroke he suffered on the day of his death.

The Grusons moved to Sherman, where they raised their adopted daughter, Brigit Anna Murphy, in 2001.

At the time of his death, Mr. Gruson was still actively involved in two firms he had established, Current Medical Citations and BioInformatics LLC.

Mr. Gruson was born March 10, 1929, in Toronto, Canada, the youngest of nine children of Harry Gruson and the former Edith Black.

He earned a bachelor's degree in biochemistry from the University of Toronto and further studied the field at the Medical Nobel Institute in Stockholm, Sweden. In 1956, he earned a master's degree in regional and city planning from Harvard University.

Following consulting work for the Puerto Rico Housing Authority and Puerto Rico Planning Board, he was assistant to the dean of Harvard Medical School and an assistant research professor at Harvard's Graduate School of Design. He then served as assistant to the dean of Yale University's School of Medicine, where he managed the expansion of Yale-New Haven Medical Center.

From 1965 to 1970, Mr. Gruson was assistant to the president of Harvard University, managing the university's community affairs and public affairs programs during a time of considerable student unrest.

From 1976 to 1980, he worked as the senior research associate for the Sloan Commission on Government and Higher Education, which published its highly praised 319-page report, "A Program for Renewed Partnership" in 1980.

Later in the 1980s, Mr. Gruson served as assistant to the president of the State University of New York Health Science Center at Brooklyn (Downstate), which includes the largest medical school in the country, a University Hospital and a Research Center.

After moving to Connecticut, he was a writer and editor for the National Organization for Rare Diseases in Danbury, writing NORD reports on specific rare diseases and editing the NORD Guide to Rare Diseases.

Mr. Gruson was a lifelong birding enthusiast and in 1972 authored the highly regarded book, "Words for Birds: a Lexicon of North American Birds," which was published by Quadrangle Books. He was a voracious reader and was a lifelong and long-suffering fan of the Boston Red Sox.

In addition to his wife and daughter, Mr. Gruson is survived by his former wife, Martha Mitchell Gruson; two children from his first marriage, Matthew Gruson and Susan Caggiano, and Amy, Michael and Galvin; stepdaughters Jennifer Feeley and Matthew, and Tara Sheridan and Gary; and many grandchildren, nieces and nephews.

In addition to his parents, he was predeceased by his eight siblings, Lala, Ethyl, Julie, Nesta, Alan, Sydney, Wilfred and Murray.

A memorial service will take place April 13 at noon at the Washington Congregational Church on the Green.

Memorials may be made to Doctors Without Borders by visiting www.doctorswithoutborders.org or by calling 888-392-0392.