This individual has no known canonical name. While the information presented is canonical, the individual described lacks an official name, thus the title is conjecture.
This Sheriff drove SG-1 and Jacob Carter/Selmak to the compound where Seth Fargough's cult was residing. He said that he didn't have enough men and authority to shut the cult down by himself and hoped that SG-1 would be able to do this. (SG1: "Seth")