In his fifth-century Confessio, St. Patrick writes of how he evangelized Ireland's chieftains and royalty. He particularly notes how hard the work was because of his commitment to poverty and because of the taunts of those who misunderstood his work.

So, how is it that in Ireland, where they never had any knowledge of God but, always, until now, cherished idols and unclean things, they are lately become a people of the Lord, and are called children of God? The sons of the Irish and the daughters of the chieftains are to be seen as monks and virgins of Christ!

And there was, besides, a most beautiful, blessed, native-born noble Irish woman of adult age whom I baptized; and a few days later she had reason to come to us to intimate that she had received a prophecy from a divine messenger [who] advised her that she should become a virgin of Christ and she would draw nearer to God. Thanks be to God, six days from then, opportunely and most eagerly, she took the course that all virgins of God take, not with their fathers' consent but enduring the persecutions and deceitful hindrances of their parents. …

So I hope that I did as I ought, but I do not trust myself as long as I am in this mortal body, for he is strong who strives daily to turn me away from the faith and true holiness to which I aspire until the end of my life for Christ my Lord, but the hostile flesh is always dragging one down to death, that is, to unlawful attractions. …

What is more, let anyone laugh and taunt if he so wishes. I am not keeping silent, nor am I hiding the signs and wonders that were shown to me by the Lord many years before they happened, [he] who knew everything, even before the beginning of time. … They were talking among themselves behind my back, and saying: “Why is this fellow throwing himself into danger among enemies who know not God?” Not from malice, but having no liking for it; likewise, as I myself can testify, they perceived my rusticity. And I was not quick to recognize the grace that was then in me; I now know that I should have done so earlier. …

For even though I am ignorant in all things, nevertheless I attempted to safeguard some and myself also. And I gave back again to my Christian brethren and the virgins of Christ and the holy women the small unasked for gifts that they used to give me or some of their ornaments which they used to throw on the altar. And they would be offended with me because I did this. But in the hope of eternity, I safeguarded myself carefully in all things, so that they might not cheat me of my office of service on any pretext of dishonesty, and so that I should not in the smallest way provide any occasion for defamation or disparagement on the part of unbelievers.

Legends abound about St. Patrick, but his autobiographical Confessio, in rustic Latin, is considered authentic.

What is more, when I baptized so many thousands of people, did I hope for even half a jot from any of them? [If so] Tell me, and I will give it back to you. And when the Lord ordained clergy everywhere by my humble means, and I freely conferred office on them, if I asked any of them anywhere even for the price of one shoe, say so to my face and I will give it back.

More, I spent for you so that they would receive me. And I went about among you, and everywhere for your sake, in danger, and as far as the outermost regions beyond which no one lived, and where no one had ever penetrated before, to baptize or to ordain clergy or to confirm people. Conscientiously and gladly I did all this work by God's gift for your salvation.

From time to time I gave rewards to the kings, as well as making payments to their sons who travel with me; notwithstanding which, they seized me with my companions, and that day most avidly desired to kill me. But my time had not yet come. They plundered everything they found on us anyway, and fettered me in irons; and on the fourteenth day the Lord freed me from their power, and whatever they had of ours was given back to us for the sake of God on account of the indispensable friends whom we had made before.

Also you know from experience how much I was paying to those who were administering justice in all the regions, which I visited often. I estimate truly that I distributed to them not less than the price of fifteen men, in order that you should enjoy my company and I enjoy yours, always, in God. I do not regret this nor do I regard it as enough. I am paying out still and I shall pay out more. The Lord has the power to grant me that I may soon spend my own self, for your souls.

Behold, I call on God as my witness upon my soul that I am not lying; nor would I write to you for it to be an occasion for flattery or selfishness, nor hoping for honor from any one of you. Sufficient is the honor which is not yet seen, but in which the heart has confidence. He who made the promise is faithful; he never lies.

St. Patrick's feast day is celebrated on March 17.