Katherine L. Armstrong passed away on October 29, 2025 in Denison, Texas.  She was born on July 28, 1956 in Denison, Texas to Glenn and Doris Gray.  She married the love of her life, Terry Armstrong, at Armstrong Church of Christ in Denison, Texas.  She is survived by her two sons Samuel Willie Armstrong and David Glenn Armstrong.

She was a graduate of Denison High School and was employed by Armstrong Furniture in Denison, Texas for several years.

She is also survived by her late husband, Terry Armstrong's family Dorris Buffington and spouse Kent Buffinton, Steven Armstrong and spouse Debra Armstrong, Danial Armstrong, Greta Brock and Gena Brown.

Her mother Doris Katherine "Honey" Easter, sister-in-law Teri Gray, nieces Brandi Biela and Dustin Biela of Seattle WA, Gigi Gray, nephews Douglas Gray Jr and Amanda Thiele of Denison, Texas, Clifton-Gray of Sherman, Texas and Ayden Gray of Denison, Texas .Aunt Billie Jane Templin, nephew Kenneth Templin and Niece-in-law Helen Templin and their children Wendy Dotson, Kenny Templin and Edie Templin-Goins of Pennsylvania and many other family members and friends.

She was preceded in death by her husband, Terry Armstrong, father-in-law Bill Armstrong, Mother-in-law who went by the name Billie Armstrong, brother and sister-in-laws Bill Junior Armstrong, Michael Armstrong, Carol Bullock and brother-in-law D. J. Brown.  Also preceded in death by her brother Douglas Glenn Gray, step-brother Randy Easter, Step-sister Rhonda Heckman and step-brother-in-law Mike Heaton.

Graveside service will be held Friday, November 7, 2025 at 10 a.m. at Fairview Cemetery in Denison, Texas.