Clark Niss
1934 - 2019
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Clark Niss
Clark Edward Niss, 84 years old, was born Dec. 22, 1934, and passed peacefully on Feb. 28, 2019, with family at his side. As many families have experienced, he passed due to complications from Alzheimer's disease.
Clark grew up in Elgin, Ill., and graduated from the University of Illinois with a degree in chemistry. He married the love of his life, Donna, in 1955. They had their first child, Susan, and then moved to Kansas City, Mo., in 1960, where the family added two more beautiful children, Diane and Steven. Clark was a leader in his church, community and business. He was president of St. Luke Lutheran Church Council in Fort Smith, North Kansas City Jaycees and Co-Plas, which he founded with Bill Weidman. Clark was also very proud of becoming an Eagle Scout. Clark and Bill sold Co-Plas, a manufacturer of gelcoat paint for the fiberglass industry in 1990. Shortly after selling Co-Plas, Clark and Donna retired to Naples, Fla., where he lived as a "snowbird." He then relocated to Tulsa in 2018 and moved to Legends Assisted Living Facility.
He was preceded in death by his parents, Charles and Madelynn Niss; and his daughter, Diane Niss. He is also preceded by Donna's brother, Warren "Flash" Gutschow.
Clark is survived by his wife, Donna; his daughter, Susan Sparks and husband Kevin with grandchildren Michelle and Michael and wife Rachel; and his son, Steven Niss and wife Sandy with grandchildren Madelyn and Lauren.
Clark loved to golf, having had four holes in one, garden, play cards and have margaritas by the pool, enjoying a "beautiful day" as it always was in Florida, according to Clark.
In lieu of flowers, please honor Clark with donations to your local Alzheimer's charity or the nearest Alzheimer's Association.
Visitation will be 9-11 a.m. at Fitzgerald Southwood Colonial Chapel, 91st and Harvard, Tulsa, with a celebration of life service at 1 p.m. at Joy Lutheran Church, 101st and Yale, Tulsa, with a lunch after. A burial will follow for a private family committal.
Arrangements are under the direction of Fitzgerald Southwood Colonial Chapel in Tulsa, (918) 291-3500.
Online condolences may be made at

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Published in Times Record from Mar. 2 to Mar. 3, 2019.
Memorial service
01:00 PM
Joy Lutheran Church
Funeral services provided by
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Memories & Condolences
Guest Book sponsored by Fitzgerald Southwood Colonial Chapel
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4 entries
March 2, 2019
My heartfelt sympathy and prayers to the family. We will greatly miss Clark at Joy Lutheran church.
Barbara Parnell
March 2, 2019
Please accept my heartfelt sympathy in the loss of your loved one. May the God who comforts all who mourn sustain your family during this difficult time. Isaiah 61:1,2
May C
March 2, 2019
I treasure the many years of friendship I enjoyed with Clark. Donna, my thoughts and prayers go out to you and to the family.
Gary Loop
March 1, 2019
Melissa, Mike and I feel your grief and you are in our thoughts, memories, and prayers.
Ann Harper
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