How did St Patrick drive the snakes out of Ireland?

Related questions

1. Do Northern Ireland and Ireland get along?
2. How is St Patrick?
3. What vegetables are native to Ireland?
4. Is Ireland a rich or poor country?
5. Has Ireland paid off its debt?
6. Why is Ireland divided?
7. Is Ireland still at war?
8. How do I become Irish?
9. How old is Ireland?
10. How cold is Ireland?

Tags

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2. #familiar
3. #banished
4. #during
5. #ireland
6. #banishes
7. #patrick
8. #undertaking
9. #jocelyn
10. #given
11. #attacked
12. #after
13. #version
14. #furness
15. #chasing
16. #snakes