Mary Cumming Tiedemann, whose love of art and nature brought her to East Hampton in early 1960s, died at Stony Brook University Medical Center on Oct. 7 following a stroke. She was 77.
Ms. Tiedemann loved the arts. She enjoyed painting, photography, and collecting craft art from all over the world. In the 1980s, she became a partner in the Elements Gallery, a craft gallery on Madison Avenue in Manhattan. She had an apartment on Fifth Avenue.
She was a gardener and garden designer. Later in life, she became involved with the Exuma Foundation on the island of Exuma in the Bahamas, where she also had a house. The foundation provides a learning center for Bahamian children. She designed a garden for the center, transforming a dry patch of land into “an oasis” that was named Mary’s Garden in 2007.
In East Hampton, Ms. Tiedemann worked with the Garden Conservancy and the Garden Club of East Hampton. She was a supporter of the arts in whatever form, with a particular passion for music, according to her family.
She was born on Jan. 28, 1935, in Summit, N.J., a daughter of Robert William Cumming Jr. and the former Elizabeth Lord. She attended the Kent Place School in Summit and graduated from Vassar College in Poughkeepsie, N.Y. In 1959, she married Carl Hans Tiedemann. The couple bought a house in East Hampton in the early ’60s, but kept their apartment in Manhattan. They later divorced.
Ms. Tiedemann is survived by three sons, Hans Tiedemann of Santa Monica, Calif., Mark Tiedemann of Los Angeles, and Michael Tiedemann of New York City, and a daughter, Leigh Tiedemann of Lexington, Mass. She leaves two sisters, Elizabeth Dartt and Jean Fordyce, both of Marion, Mass., and 10 grandchildren.
A memorial service will be held at St. Luke’s Episcopal Church in East Hampton on Saturday at 10:30 a.m. Memorial contributions were suggested for the Exuma Foundation, 5885 Landerbrook Drive, Suite 300, Mayfield Heights, Ohio 44124.