I find it quite ironic that St Patrick was an Englishman.
Well he was a Briton anway. Whether he lived in what is now Scotland, England or Wales is debated.

About the year 388 the singular piety of St Patrick, according to tradition, became so offensive to the devil, that he incensed the whole body of witches in Scotland against him. In a band they assailed the astonished saint, who fled towards the river Clyde, near the mouth of which he found a little boat, wherein he immediately leapt, and sailed for Ireland. It is well known that witches cannot cross a running stream in search of their prey; but these tore a huge fragment of rock from a neighbouring hill and hurled it after Patrick, taking, however, so bad an aim, that the mass fell harmless to the ground, and afterwards, with some additions from art, became the fortress of Dumbarton.

- C.K. Sharpe, A Historical Account of the Belief in Witchcraft in Scotland