Once home, Patrick found it awkward and embarrassing to be around a man named Calpurnius, so he claims to have had visions that told him he was to go back to Ireland, but not until he was an ordained bishop. Fast-forward however long it takes to become an ordained bishop (three months?), and all of a sudden he is headed back to Ireland to convert those pagan, druid-worshipping beasts into Christians. In this, Patrick was allegedly successful, and wrote that he'd "baptized thousands of people," ordained priests to lead new Christian communities, and even "converted wealthy women into nuns," as one is wont to do.
But life wasn't such a breeze, even for a bishop returning to a land where he was, for six years, held as a sheep-herding slave. Unlike that scene in Pretty Woman where Julia Roberts gets revenge on that saleswoman who embarrassed her when she was dressed in her prostie-clothes, putting on a fancy dress and hat didn't necessarily keep Patrick out of harm's way. In fact, he writes that, at one point, he was beaten, robbed, and put in chains awaiting execution. And on another occasion he stood trial for some sort of charge of impropriety or misuse of funds, and was forced to recount all the things he did for free, mentioning that "he returned gifts wealthy women gave him, did not accept payment for baptisms, nor for ordaining priests, and paid for many gifts to kings and judges." So basically, the Catholic Accounting Department flagged his Concur statements because his receipts seemed shady. If this were US Weekly, this would be filed under the section "Saints are just like us!"