[2] Until he passed it on to Wellman's later character, John Thunstone, Judge Pursuivant possessed a sword-cane with a silver blade said to have been forged by Saint Dunstan.
[3] The sword-cane, which was especially potent against vampires, werewolves and other supernatural creatures, was passed on when Pursuivant's advanced age made him too weak to effectively wield it.
[4] Although referred to in several stories, Judge Pursuivant only actually appeared in four short stories or novellas by Wellman: "The Hairy Ones Shall Dance" (1938), "The Black Drama" (1938), "The Dreadful Rabbits" (1940), and "The Half Haunted" (1941) – all originally published in Weird Tales – and as a supporting character in Wellman's 1982 Silver John novel The Hanging Stones and the John Thunstone novel The School of Darkness.
All Wellman's Judge Pursuivant short stories have been collected in Lonely Vigils, and later in Fearful Rock and Other Precarious Locales, Night Shade Books (2001).
Judge Pursuivant and his book, "The Unknown that Terrifies" is mentioned in "The Poltergeist of Swan Uppin", a short story of Jules de Grandin by Seabury Quinn.