Leonard F. Thur, age 84 of Clifton Park passed away peacefully with his loving family by his side on Thursday, January 9, 2020. Born on September 9, 1935 in Eau Claire, WI, he was the son of the late Leonard and Dorothy Thur. Len was a veteran of the US Army and graduated from Eau Claire State University in Wisconsin. He was employed as a chemical engineer at the Rensselaer Polytechnic Institute in Troy. He is survived by his wife of 60 years; Mary Thur, daughters Michele (Jon) Trace and Sabrina Falzone, his grandchildren Kristy, Melissa, Taylor, and Jake, and great-granddaughter Emma. A memorial service will be held on Sunday, January 12th at 1 p.m. at King of Kings Lutheran Church, 1593 Crescent Rd. in Clifton Park. In lieu of flowers, donations may be made in his memory to King of Kings Lutheran Church, 1593 Crescent Rd., Clifton Park, NY 12065.