I came across the phrase "on this head" lately. It seems to have the meaning of "in regard to this," "on this matter" etc.

Is this a widely accepted usage, even in formal English?

Thank you.
Can you provide the full sentence or context? I do not recognize this phrase on its own.
Site Hint: Check out our list of pronunciation videos.
"Being known in these parts for a friendly soul, and trusted, moreover, I have fallen into the position among the peasantry which the parson used to hold, and does still when he takes the trouble to qualify for it. If I can’t always tell them what to do I may be able to put them in the way of the man who can. One learns how to make a dictionary of life as one gets on in it. Another use which they can have of me: I can tell them how to put their requests or demands. They have no sense whatever of a written language. I must not betray confidences, or I could relate some curious matters on this head. I know, for instance, a farmer who is worth a couple of hundred thousand at the least, and who can neither write nor read. He has learned somehow a cross between a scratch and a blot which is accepted as a signature to cheques—­but no more than that."

"In reply to the pressman's Question, Sir Joseph, said that he was not prepared to discuss matters on this head until the whole of tho accounts were in after thorough investigation."

"The sum of all that hat been said on this head, may be comprehended in the following general maxims."

I find this phrase mostly used in old-time writings by British or Commonwealth authors.
It is not a current or common usage.

However, I did find one definition of head which states, "the subject matter at issue, a question raised for consideration, or a disputed factual/legal contention to be discussed or decided."

Please note that that was the 23rd definition listed in the third dictionary in which I looked, so it certainly is not widely used in this way.
Thank you for going through the dictionaries on my behalf. I appreciate that.
Students: Are you brave enough to let our tutors analyse your pronunciation?

I found it in Huxley's essay "On Lord's Prayer" - II, within the Book "The Divine within".

Hello! Just adding my two cents on the head of examples of usage of this expression:

"Mr Quinion then formally engaged me to be as useful as I could in the warehouse of Murdstone and Grinby, at a salary, I think, of six shillings a week. I am not clear whether it was six or seven. I am inclined to believe, from my uncertainty on this head, that it was six at first and seven afterwards."

Charles Dickens, David Copperfield (1850), Chapter XI.