Lucas was the kid right?
Other way around. Connors was Lucas, and Johnny Crawford was Mark, his son. And I agree with you, cigar.
In a Peckinpah biography I read, Bloody Sam wanted to develop the relationship between father and son over the course of the show, but the producers wanted little development. That way, there could be episodes with Mark being put in some dangerous situation and Lucas would have to save him. Just one of the reasons Peckinpah left the show.