7. And The Irish Shamrock Actually Has Three Leaves, Not The Four Commonly Used
A "four-leaved clover" or shamrock is said to bring great luck, so rare are they - but it is actually the three-leaved variety that St Patrick is associated with. The legend goes that, while attempting to spread the word of Christianity around Ireland, St Patrick picked up a three-leaved shamrock to show to the general populous. This shamrock then became a symbol to depict the Holy Trinity of the Father, the Son and the Holy Spirit when St Patrick preached to the Irish - and that is why it became synonymous with him.