Winne The Pooh Author Decendents?

Is There and Decedents of the Author Winnie The Pooh (A. A. Milne) I know Christopher Robin Milne Died in his sleep in 1996 and i know Christopher Robin had a Daughter named Clara Milne and i can't find anything about her or anyone else related to Christopher Robin or A. A.Milne anyone know anything about them?