As of my knowledge cutoff date in early 2023, Allison Montclair is the pseudonym used by an author known for writing historical mystery novels. Montclair is particularly recognized for the "Sparks & Bainbridge" series, which starts with the novel "The Right Sort of Man." These books are set in post-World War II London and follow the adventures of two very different women who start a marriage bureau and find themselves solving crimes. The series mixes elements of cozy mystery with the social and cultural changes of the era, and has garnered attention for its wit, period detail, and engaging characters. Since authors can be quite private, there may be limited personal information available about Montclair publicly, and any further details could be reserved for author bios or interviews.