|Spouse||Aphasia du Berry|
|Child(ren)||Cousin Creep, Cousin Blob|
Clump Addams is a deceased relative of The Addams Family.
Uncle Fester explains that Clump was his "dear departed" brother. The last time he talked to him was at a seance, but Clump didn't answer. That's how Fester knew it was Clump, "He was a quiet one."
The Addams Family original series episode:
and the film: