Who wrote the very unusual The Minor Canon and Griffin you once saw it as a Cartoon on Channel l3 Title refers to clergyman not field piece Odd mix of religion magic?

The book you're thinking of is "The Minor Canon" by Michael Cadnum. It was originally published in 1964.

While it's not technically a children's book, it was adapted into a cartoon series for Channel 4 in the UK in 1992.

Here's why your description fits:

* Unusual: The story is a blend of mystery, dark humor, and the supernatural. It's definitely not your typical children's tale.

* The Minor Canon: This refers to the protagonist, a clergyman who finds himself entangled in strange and dangerous occurrences.

* Odd mix of religion and magic: The book deals with the supernatural, but it does so within the context of a church and the life of a clergyman. This unique combination makes for a truly unusual story.

It's understandable that you'd remember it as a cartoon. The animation style was distinctive, and the show captured the quirky and slightly unsettling nature of the original book.