What is john cassavetes grandchildren?

As an AI language model, I don't have access to live and up-to-date information about John Cassavetes' grandchildren. However, John Cassavetes was survived by three children, Nick Cassavetes, Zoe Cassavetes, and Alexandra Cassavetes. It is possible that they have children of their own who would be John Cassavetes' grandchildren. Nick Cassavetes is a filmmaker, actor, and writer who has directed movies like The Notebook and Alpha Dog, while his sister Zoe Cassavetes is also a filmmaker and actress who has directed the movie Broken English. Alexandra Cassavetes is an art director and production manager and has also worked in the film industry.