Don Knotts was American comedian and actor mostly known as Barney Fife from the Andy Griffith Show.
I can remember as a child hearing the whistle melody of the Andy Griffith show playing in the living room on Saturday mornings. Don Knotts also had a few movies I enjoy as well.
This is probably one of the more popular portraits people like to paint of Don Knotts. I have considered doing a acrylic painting of a scene from the show as well.