Bertha Wadt died in her sleep on Dec. 7 at Pennswood Village in Newtown, Pa. She was born in 1909, the second child of Leo and Helen Heimerdinger.

In 1931 she married Michael Greenebaum, who died in 1980. In 1988 she married Bill Wadt, who died in 2000.

Bertha grew up in Melrose Park, Pa. She attended and graduated from the University of Chicago. Bertha and Michael lived and raised their family in Chicago, Winnetka, and Glencoe, Ill. They moved to Washington, D.C., in 1965 on the occasion of Michael’s appointment to the Federal Home Loan Bank Board. Following Michael’s death in 1980, she joined her brother, Leo, and siste in law, Jane, as residents of the just-completed Pennswood Village, where she lived for 27 years.

Bertha was an active member of the League of Women Voters and shared Michael’s interest in politics, supporting many Democratic candidates for office over the years. She treasured her friendship with many Democratic politicians and government officials, especially senators Paul Douglas and Paul Simon, who represented Illinois in Congress. Most recently she was an enthusiastic supporter of Pennsylvania state Rep. Christopher King and valued the personal relationship she developed with him.

For many, the things for which they remember Bertha are quite personal, since she provided love and support when it was needed to friends and relations of all ages.

From the 1970s onward, Bertha was a regular visitor to her second home in Menemsha, which had originally come into the family when it was purchased by her sister in law, Sarah Greenebaum, in 1945 from the Fred Tilton family.

She was predeceased by her parents, her brother Leo Heimerdinger, and her sister Alice Brandeis.

Survivors include her sons, Michael of Amherst and Edwin of Bloomington, Ind.; five grandchildren; and six great-grandchildren.

A memorial service for Bertha is scheduled at Pennswood Village on Jan. 19 at 10 a.m. Memorial donations may be made to Pennswood Village, 1382 Newtown-Langhorne Road, Newtown, PA 18940 and directed to the Staff Educational Assistance Fund, the Barclay House Capital Campaign, or the Unrestricted Endowment Fund.