Paradise, on CBS
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The third season was renamed Guns of Paradise, and some might call it a sequel series, but as far as I'm concerned it was the same show, and renaming it was pointless. Anyway, I don't remember it all that well, but I liked it while it was on, and I'd love to see it again someday.
So, there was this Old West gunfighter named Ethan Allen Cord, who had to raise sister Lucy Carroll's kids, after she died. The kids included a teenage girl named Claire, and her younger brothers, Joseph, Ben, and George. So Ethan moved to the town of Paradise, California, and became a farmer. However, his past often caught up with him, and he still had to do a fair amount of gunfighting, in spite of his efforts to avoid it. There was a woman named Amelia Lawson, who became a love interest for Ethan, I guess. And he had a Native American friend named John Taylor. In the third season, Ethan was appointed town marshal. And that's all I can tell you.