personal matter

References in classic literature ?
"That," Thomson explained, "is almost a personal matter with me.
It is very important indeed that we should keep on friendly terms with this young man,--I don't mean as a personal matter. It's a matter of politics--perhaps of something greater, even, than that."
But he did not pursue the speculation, and without replying, he fell to musing on a quite different and personal matter.
"It is a personal matter, and I beg that you will let it drop.
This last move of hers has made it a personal matter between us.
Then suddenly she diverged and began to talk about some personal matter.
It becomes a personal matter with me now, and, if God sends me health, I shall set my hand upon this gang.
As they had been discussing a score of personal matters only half-an-hour before, the introductory style seemed a little superfluous.
The faces all expressed animation and apprehension, but it seemed to Pierre that the cause of the excitement shown in some of these faces lay chiefly in questions of personal success; his mind, however, was occupied by the different expression he saw on other faces- an expression that spoke not of personal matters but of the universal questions of life and death.
"Everything is packed, and as I have a few personal matters to attend to I think I'll take the afternoon off."
Since last evening," he added, smiling, "you have done enough in my service, and if you have any personal matters to settle it is just that I should give you time."
On the other hand, Saxon was bewildered by Mercedes' extravagance in personal matters. Her underlinen, hand-made of course, was very costly.