Claire Seiden

Claire Ganetsky Seiden lived a life deeply woven into the fabric of Denver's Jewish community, spanning nearly nine decades from her birth in 1934 to her passing in 2026. Born on April 30, 1934, in Colorado to Samuel Leonard Ganetsky and Anne Krupp Ganetsky, Claire represented the continuity of Jewish life in the Rocky Mountain region, inheriting and maintaining traditions that would define her throughout her long life.

Claire's father, Samuel Leonard Ganetsky, had been born in 1908 in Winnipeg, Manitoba, Canada, but established his life and family in Colorado. Her mother, Anne Krupp Ganetsky, was born in 1911 in Colorado, making her a native of the state and connecting Claire to families that had already put down roots in Colorado's developing Jewish community. This Colorado heritage would prove significant throughout Claire's life, as she remained connected to the Denver area across all her years.

Growing up in Colorado during the 1930s and 1940s, Claire was part of a close-knit family that included her sister Marilyn Ganetsky. Marilyn would later attend the University of Colorado, where she was initiated into Alpha Delta Pi sorority in 1961, reflecting the family's commitment to education and community involvement. Marilyn married Ronald Furman and had three daughters: Rachel Furman, Pamela Forrest, and Lisa Zeznick, who would become Claire's beloved nieces.

As a young woman, Claire met and married Burton Seiden, beginning a partnership that would span many decades and produce three children: David, Daniel, and Debra (known as Debbie). Burton came from a Denver-area family with strong community ties, and his brothers Arthur and Leonard Seiden were also part of the local Jewish community. The Seiden family maintained their connection to Jewish traditions and institutions throughout their married life.

Claire and Burton's marriage was blessed with three children, though tragedy would later touch their family. Their son David A. Seiden lived in Denver and was deeply loved by his parents and sister. David passed away in 2009, leaving behind his parents and sister Debbie, and was laid to rest at Rose Hill Cemetery, the Orthodox Jewish cemetery that has served Denver's Jewish community since 1892. Their son Daniel also predeceased his parents, leaving Claire and Burton to face the profound grief of outliving their sons.

Their daughter Debbie survived to adulthood and continued the family's tradition of community involvement. She has served as Treasurer of the Cutthroat Chapter of Trout Unlimited, Colorado's oldest and largest Trout Unlimited chapter and the seventh oldest in the nation. Debbie maintains her residence in the Denver metropolitan area, living in Castle Pines, Colorado, ensuring the family's continued presence in their longtime community.

Throughout her life, Claire maintained strong connections to her extended family. Through her mother's Krupp family line, she was cousin to Elaine Appel, who along with her husband Max, co-founded Orange Glo International in the 1980s. The Appels built their cleaning products company into a tremendously successful enterprise that was eventually sold to Church & Dwight for $325 million in 2006, and they became prominent philanthropists in the Colorado community. This connection provided Claire with links to broader networks of successful and philanthropically minded families in Colorado.

Claire's commitment to Jewish values and community service was evident in many aspects of her life. When family members passed away, memorial contributions were consistently directed to Jewish Family Service of Colorado, an organization that traces its roots back to 1872 and the founding of the Hebrew Ladies Benevolent Society in Denver. This organization has grown to serve thousands of people annually with over thirty programs supporting the Jewish community and beyond, reflecting values of social responsibility and community care that clearly resonated with Claire and her family.

Burton Seiden passed away before Claire, leaving her to face her final years as a widow who had already endured the loss of both of her sons. The phrase "of blessed memory" that appears throughout her obituary when referencing deceased family members reflects the deep Jewish mourning traditions that Claire maintained throughout her life. These traditions provided structure and meaning during times of loss while connecting her to centuries of Jewish practice and belief.

Claire's religious observance extended to her final arrangements. She was laid to rest at Rose Hill Cemetery in Commerce City, Colorado, the Orthodox Jewish cemetery that has served the Denver community since its establishment in 1892. Her funeral was handled by Feldman Mortuary, Denver's Jewish funeral home that has been family-owned and operated since 1936, ensuring that her final arrangements honored Jewish law and custom.

Throughout her ninety-one years, Claire witnessed tremendous changes in American Jewish life, Denver's growth from a smaller city to a major metropolitan area, and the evolution of Jewish communal institutions. Yet the fundamental values that shaped her life - devotion to family, commitment to Jewish tradition, and responsibility to community - remained constant. Her sister Marilyn passed away in September 2020, and other family members, including Burton's brother Leonard, also died in recent years, making Claire among the last of her generation.

Claire Ganetsky Seiden passed away on Friday, April 3, 2026, in Denver, Colorado, just weeks before what would have been her ninety-second birthday. Her graveside service was held on Monday, April 6, 2026, at 10 am at Rose Hill Cemetery, allowing family and friends to gather and honor her memory according to Jewish tradition. In keeping with Jewish custom and her family's values, memorial contributions were requested for Jewish Family Service rather than flowers, ensuring that her memory would continue to support the community work that had been important to her throughout her life.