The beard, the crozier, the mitre, the shamrock - Saint Patrick as he is visualized in thousands of statues, paintings and minds. Not very historical, in the late 5th century such garb was unknown.
From Bernd Biege, About.com
The Historical PatrickOrigins of the Saint Patrick's Day ParadesA Traditional Saint Patrick's Day
Saint Patrick 101Tracking Patrick in Dublin, Meath, Connacht and UlsterThe Pilgrimage of Croagh Patrick (County Mayo)
Saint Patrick Centre, Downpatrick (County Down)Saint Patrick's Trian, Armagh (County Armagh)Saint Patrick's Cathedral (Dublin)
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