Anse is the son of Buddy McCallum, and he gets into a fistfight with Linda's love interest, Matt Levitt, that ultimately leads to Matt's expulsion from Jefferson. His family has deep roots in northeast Yoknapatawpha County.
Preacher Birdsong is a World War I veteran who "learned to box in France in the war" (192). He "lives out in the country," and likely is connected to the Birdsong family in Frenchman's Bend that appears in two other texts - but that's not made explicit. "Preacher" is his name, not a job title. Charles Mallison has seen him boxing with Matt Levitt.
Matt Levitt won the Golden Gloves boxing competition "up in Ohio or somewhere last year," according to Charles (192). Gavin says, "He graduated from that new Ford mechanic's school and the company sent him here to be a mechanic in the agency garage" (192). Levitt owns a yellow cut-down racer, and Linda rides in it with him. He and Gavin, for a time, are rivals for Linda's attention. After Matt bloodies Gavin's face and has a violent altercation with Anse McCallum, the sheriff runs him out of Jefferson.
Melissa Backus has "two children" with the bootlegger she marries (188). Neither his name, however, or the children's is given in this text. In the short story "Knight's Gambit" they are identified as a daughter and a son, though there only the son is given a name - Max Harriss.
Clarence Snopes' "home" is almost certainly in Frenchman's Bend, and at least "two miles" away from the site of the picnic, but beyond that we have to speculate about its location (349).
As a Mississippi state senator Clarence Snopes seems to spend most of his time in Jackson in "By the People" and The Mansion, but both texts briefly visit the house he maintains in Yoknapatawpha. It is somewhere in Frenchman's Bend, at least "two miles" from the site of Varner's annual picnic (138).
This is where the "four half-Snopes half-Apache Indian children" of Byron Snopes tie Doris Snopes "to a stake in the woods" (328) - a story told at more length in The Town.
Ratliff invites Stevens to come hunt geese in the "big oat field in the bend below Uncle Billy's pasture" (352). Oats are an atypical crop in Yoknapatawpha, but no other details are provided, not even what "bend" is referred to. It is not the bend from which Frenchman's Bend derives its name, and it could be a bend in a road or a river. However, it is undoubtedly in the Frenchman's Bend region, since it belongs to "Uncle Billy" Varner. The specific place in the Bend we chose to locate it is speculative.
