A phonetic curiosity: In English-speaking countries, "Sonofka" is often mispronounced as "Suh-NOF-kuh." The original Slavic pronunciation would have placed the accent on the first syllable: .

While the Sonofka family has no real-world existence, the name has become a shorthand among fans of Unbreakable Kimmy Schmidt for It is used in online discussions about true crime cases (e.g., the Ariel Castro kidnappings, the Fritzl case) to describe property owners or neighbors who failed to notice obvious signs of captivity.

Because of this, every generation has a Piotr, an Ivan, a Maria, and a Catherine. For researchers, this repeating pattern is both a help (you can predict names) and a curse (confusing which Piotr is which across parish records).