Sam is the bumbling, elderly sheriff of the town and Buck's owner. He first shows up in the movie riding Buck, nailing a wanted poster for Alameda Slim on a post. He reappears later to bring a bank notice to Pearl, explaining that the banks are going to auction off her farm if she can't pay the full amount she owes them because they are losing so much money due to cattle rustlers leaving behind so many bankrupt ranchers. After suggesting that Pearl sell off a few of her livestock to pay the debt, she chases him off her property in a fury, sending him running.
Sam is seen again later when Mrs. Calloway, Maggie and Grace go to town and try to find him to ask for more time to get the money, running into Buck in the process. They see the Sheriff pay the fake bounty hunter Rico a large sum of money when Rico turns in a criminal, giving Maggie the idea to catch Alameda Slim for the reward, which Mrs. Calloway thinks is a ridiculous idea. When Maggie and Mrs. Calloway start fighting and causing a commotion, Sam runs out and ropes them both and Grace. He then ties the three bovines to the back of a chuck wagon, as he mistakenly thinks they belong to the cattle driver, not realizing they're Pearl's cows.
When Rico mentions he needs a fresh horse, Sam tries to think of a horse for the bounty hunter, describing everything that Rico would need in a mount with Buck showing off behind him, trying to prove that he was the perfect horse. Rico chooses to take Buck, with Sam warning him about his headstrong nature.
Later, after Rico has tried to return Buck only for the stallion to escape the ranchers who were trying to return him and run off to prove himself to Rico again, we see Sam and his dog Rusty both becoming visibly sad as the ranchers explain that Buck ran off, both of them clearly missing the wild-natured horse.
At the climax of the film, Sam is auctioning off the farm, unknowingly selling it to Alameda Slim as Yancy O' Del, and attempting to auction off the chicks. Seeing the train coming crashing behind him, the auctiongoers panic, Pearl rushes forward to grab the chicks before they get hurt, and the Sheriff dives out of the way of the train. After a brief battle, the cows get the best of Slim when his disguise is removed, revealing his identity. Sam becomes shocked and horrified that Mr. Yancy O' Del who is buying Pearl's farm is Alameda Slim, and he ropes up the outlaw who attempted to yodel and is hauled off to jail. He then gives Pearl the reward money, which allows her to save her farm.
At the end of the film, the Sheriff dances with Pearl as they and all the farm animals (who are also seen dancing) celebrate Little Patch of Heaven being salvaged and re-opened, and everyone (except Slim) gets a happy ending.