I am English and this sentence makes no real sense.

I'm American. This sentence makes no sense.

I believe you have the phrase wrong. It should be "neither hither nor yon". It's a very old way of speaking that means "neither hear, nor there" (hither =here, and Yon= there (or yonder). This just means that whatever is being discussed does not have any real importance. It has no importance or significance.

No idea. It is not really a sentence. Do you have the part before?

It's not a sentence. And it makes no sense...