Kuryakin is consistently referred to as Russian; however, he appears to have spent at least some of his childhood in Kyiv, Ukraine ("The Foxes and Hounds Affair").
The text suggests a discrepancy in Kuryakin's identity: while commonly portrayed as Russian, his upbringing in Kyiv, Ukraine, according to the story "The Foxes and Hounds Affair," complicates this perception.