"The Young Englishman"
Lucas McCain accuses the young foreman of a neighboring ranch of rustling one of his calves.
From "The Rifleman Episode Guide"
Jeremy Ashford was maintaining the ranch for his older brother, who had inherited the title of Duke and all of its wealth. If that Duke had more than one son, those other children would have to find their own way in the world. And with each succeeding generation, that connection to the noble line would become more distant.
The previous Duke, father of the "current" Duke and of Jeremy, may have had a younger brother as well, so that by the time of World War II, the great-grandchildren Martin and Edith Ashford were leading simple lives as Quakers (as seen in an episode of 'Foyle's War' - "Bad Blood".)
Martin was accused of a murder, and because of the investigation, his sister Edith rekindled a past love with Sgt. Paul Milner.
You go far enough back, I suppose you can link plenty of TV characters to each other. And the great thing about the Toobworld timeline is that if you go far enough forward, you can do the same thing!