Walking through the Square in The Mansion, Mink sees the "drummers sitting in leather chairs along the sidewalk" in front of the Holston House (37). A 'drummer' was a traveling salesman.
In The Mansion when Linda Snopes Kohl tells the Mallisons "about the people" in the Spanish Civil War, she includes "a Russian poet that was going to be better than Pushkin only he got himself killed" (241). It's not clear whom Faulkner has in mind, if he has a real poet in mind at all, but since the other two writers Linda mentions - Hemingway and Malraux - are historical figures who were in Spain, he may mean Frederico Garcia Lorca, the Spanish poet who was killed fighting for the Republicans in that war.
The "RFC captain" in World War I who, according to Uncle Gavin in The Mansion, was so young and had "such a record" that the British government sent him home before the end of the war so that "he might at least be present on the day of his civilian majority" - i.e. the day he turned twenty-one (232). (The Royal Flying Corps was the original name of the RAF, the better-known Royal Air Force.)
The various residents of Memphis who are mentioned in The Mansion include the people who, "forty-four and -five and -six years ago" (i.e. around the beginning of the 20th century), stood on the levee or "along the bluff" over the river to watch the grand river steamboats being loaded and unloaded (315). This group also includes the various crowds that Mink meets throughout the city.
These 121 Mississippi Representatives are the political colleagues of Clarence Snopes in The Mansion. With him included there are 122 total members of the House, which is a historically accurate number. Clarence addresses these men soon after assuming office.
The reference to this character|these characters in The Mansion is a good example of how hard it is to create data entries for many of the inhabitants of Faulkner's imaginative world. As part of the novel's description of Jake Wattman's moonshine operation, the narrator refers to the "recurrent new reform-administration sheriff" in Yoknapatawpha who hopes to raid it (244). "Sheriff" is singular. "Recurrent," however, suggests more than one sheriff.
Ratliff identifies most of the guests at the Kohls' wedding reception in The Mansion as "poets and painters and sculptors and musicians" (191), but seems to think the man who recognizes the necktie he is wearing as an "Allanova" must be "a haberdasher taking Saturday evening off" (192).
According to The Mansion's account of how a Russian fighting for the British as a German mercenary during the Revolutionary War became the founder of the Ratliff family in Yoknapatawpha, the name first belonged to a farm family in Virginia. Some time after Nelly Ratcliffe begins secretly feeding Vladimir Kyrilytch, she "brings him out where her folks could see him" (184). Some time after that, her "ma or paw or brothers or whoever it was, maybe jest a neighbor," noticed that she was pregnant, "and so" Nelly and this first V.K. were married, using her last name (184).
