Gavin Stevens, one of Faulkner's favorite characters, practices law and serves Yoknapatawpha as the County Attorney in the same law office his father used before him, though the only time it is Judge Stevens' office is in Faulkner's last book, The Reivers.
This woman appears in Frenchman's Bend a week after Thorpe was shot, "claiming to be Thorpe's wife" (90), and hoping he left some property. Though she has "a wedding license to prove it" (90), the narrator sounds suspicious about her marriage.
The man whom Chick refers to as "grandfather" (89) and that the Pruitts call "Captain Stevens" (96) is the father of Chick's Uncle Gavin and his mother, Margaret Stevens Mallison - though she is not named in Chick's narrative. He is apparently still a practicing attorney at the time of this story, though his son persuaded him to let him take Bookwright's case. Most of the other Yoknapatawpha fictions in which he appears or is mentioned refer to him as Judge Stevens.
The judge at Fentry's trial is referred to by name by the narrator's "grandfather" (93), but he is not described. He is so sure that Bookwright will quickly be acquitted that he "doesn't retire" to his chambers when the jury begins deliberating (92).
This unnamed lawyer, appointed by the District Attorney to prosecute the case against Bookwright, is content merely to go through the required motions, presenting the evidence in less than an hour and only "bowing to the court" rather than presenting a closing argument (92). Like (almost) everyone else in the courtroom, he believes Bookwright should be acquitted.
The District Attorney of Yoknapatawpha apparently feels so certain that Bookwright will be found not guilty that he "conducts the case through an assistant" (91), and does not otherwise appear in the story.
This "solid, well-to-do farmer, husband and father" from Frenchman's Bend (90) is Gavin Stevens' client. He turned himself in after shooting Buck Thorpe to keep him from eloping with his daughter; the story begins during his trial for that crime. In other fictions there are inhabitants of Frenchman's Bend named Bookwright and Bookright - Homer, Cal and Odum - but there is no clear evidence to identify this character with any of those men.
Will Varner is the "justice of the peace and chief officer" of Frenchman's Bend. His home appears only in passing, when Bookwright wakes him up to turn himself in for shooting Thorpe (90).