East Hampton’s formidable population of “older adults” is characterized, among many traits, by resilience, and that can serve them well in the face of a pandemic.

Irene Lister Thomas, a Sag Harbor native who loved to knit and care for the cats in her neighborhood, died on April 13 at the Woodcrest Rehabilitation and Residential Health Care Center in Flushing, Queens. She was 99.

Susan Kosche of Wilton, Conn., a longtime vacation-home owner in East Hampton, died of complications of Covid-19 on April 28 at the Waveny Care Center in New Canaan, Conn. She was 80.

Maria Polushkin Robbins, the author of more than 30 cookbooks and children’s books, died at home in Springs on May 5. She was 77.