https://www.metv.com/stories/will-geer-would-make-up-lines-on-the-set-of-the-waltons

Geer loved to improvise.

Will Geer said that he was glad he was blacklisted from Hollywood in the 1950s (https://www.metv.com/stories/will-geer-said-that-he-was-glad-he-was-blacklisted-from-hollywood-in-the-1950s)

Geer was more like Grandpa Walton than you might think.