When Byron Snopes's children step off the train in Jefferson, Chick describes Byron's youngest as "A little one in a single garment down to its heels like a man's shirt made out of a flour- or meal-sack or maybe a scrap of an old tent" (378). He never indicates the sex of this child, perhaps because he cannot determine it himself - or perhaps to emphasize the strangeness of the four as a group.
Byron has four children with an Apache woman in New Mexico. They are probably all legally illegitimate, and all are wearing overalls when they get off the train station in Jefferson. None are named, but two are specifically identified as "boys" (378). Charles Mallison's narrative does not differentiate between these boys.
Byron Snopes has four children - probably all illegitimate, legally - with a Jicarilla Apache in New Mexico. According to Charles Mallison's narrative, "The tallest was a girl though we never did know whether she was the oldest or just the tallest" (378); like her brothers, she is wearing overalls when she arrives in Jefferson.
This white railroad employee's haste in getting off the train that carries Bryon Snopes' children to Jefferson is an early sign of trouble - a red flag of a different kind.
Although he's usually the first employee off the train when it arrives in Jefferson, when it's the train carrying Byron's children this porter lets the conductor and the flagman exit the train first (377).
Gavin Stevens' janitor is named Clefus. Charles Mallison speculates about how pleasantly surprised he was when he came in "to sweep the office" and found the whiskey toddy Gavin had left untouched on his desk (376).
A "Mr. Gowrie" (375) sells a bottle of whiskey to Charles Mallison. He is a purveyor (and probable manufacturer) of moonshine whiskey. The Gowrie family figures prominently in Intruder in the Dust, where the patriarch at its head is named "Nub," short for Nathan Bedford Forrest Gowrie. In The Mansion Nub is a moonshiner, and on that basis we assume this "Mr. Gowrie" is that character, but that's an assumption.