Weldon graduated from Ottumwa High School in Iowa in 1951, and from there went on to be Letterman and Captain of the Iowa State University Cyclones Football team (53', 54' 55'). Before graduating from ISU in 1955, he married Mary Marguerite "Marti" Larson (1933-1998) with whom he had 3 wonderful children, Blake (1956), Bradley (1957) and Jill (1959). After Marti's passing in 1998, Weldon married the lovely Nancy Hancock (Nana to some), who would be with him until the very end when he made his way to heaven on March 17th, 2020 after a two and a half year battle with Parkinsonism.
He was predeceased by his parents Lester and Gladys; first wife of 42 years, Mary Marguerite "Marti", and older brother Robert. He is survived by his wife, Nancy Hancock-Thalacker of 20 years, younger brother Bruce Thalacker and wife Mary; children Blake Thalacker and wife Gail Thalacker, Bradley Thalacker and wife Graciela Thalacker and Jill Clark; grandchildren Victoria Clark and husband Micheal Araas, Evelyn Clark Lopater and husband Zachary Lopater, Alora Clark, Kira Thalacker, and Erin Thalacker who all admire and love him dearly, along with his great grandson Archer Clark Araas.