Chas. Snicket was the father of E. Snicket (Jacob Snicket or Jacob's wife) and the grandfather of Jacques, Kit, and Lemony Snicket. He was also the great-grandfather of Beatrice Snicket. He also has two siblings, A. and B. Snicket, who are not mentioned much.
- There is speculation that either A. or B. Snicket (Chas's siblings) is the grandparent of the Baudelaire orphans.
- There is speculation that Gregor and Isaac Ainswhistle are Chas's grandchildren, G. and I.
- It is also possible that Miranda and Olivia Caliban are Chas's grandchildren M. and O., which would mean that he is also the great-grandfather of Friday Caliban.