Parker also owned the company that produced "Daniel Boone".
Unless "Fespar Enterprises" is named after someone else. He made a little more money up-front that way.
A number of TV stars of the 1960s made sure they owned a piece of the production end, thus enhancing their income at a time when rerun performance residuals were almost unheard of. Dick Van Dyke did this with Calvada Productions. (Ca=Carl Reiner, writer/producer; l=Leonard Sheldon Leonard, executive producer; va=Van Dyke; and da=Danny Thomas, who paid the bills.)