Children's book (possible series) similar to Addams Family? Someone drives a hearse?

[Kaki]

A friend and I were recently discussing a book series we read as children, and we cannot for the life of us remember the title of the book/series. Here's what we've got so far:

Spooky book series about an Addams family style fam living in an old mansion?? I have a vivid recollection of one of them driving a hearse and an aunt who lived in, like, a fake elephant or horse or some other large animal?

Other possible details:
-Probably 90s-00s
-niche book series that was like "[child's name] house of ________ ________"
-We want to say the family's last name was Moody or Mooney or something similar?

[SamSpayedPI]

If you search for "Addams Family" in "search discussion posts" you'll find some similar queries. Most were, unfortunately, abandoned, but some past suggestions were Samantha Slade: Monster-Sitter, The Midnight Ghosts/House of Shadows/Ghost T, and The Hogben Chronicles.

[Lobstergirl, au gratin]

Kaki, are you still looking for this or did you find it?

[Emma]

Could it have been The Graves Family and The Graves Family Goes Camping by Patricia Polacco? They are picture books but have a fun Addams family vibe.

[Rainbowheart]

Awful End?

Good Neighbors?

Pure Dead Magic?

[Florence]

Spooks by Colin Hawkins?