In some folk songs, such as Woody Guthrie's "Hard Traveling" and Townes Van Zandt's "Poncho and Lefty," the word "knowed" is used as the past tense of "know."
To what extent and in which dialects has "knowed" actually been used? I find it interesting because common irregulars tend to be well conserved over time (like go→went, is→was, etc), so I'm wondering under what conditions "knowed" would have, uh, arised.