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While the name belongs to the tree that has little red autumnal berries, it is also the anglicized name of St. Ruadhán of Lorrha, one of the Twelve Apostles of Ireland. The 6th-century saint founded a monastery which, although in ruins, can still be seen today. He was known for his prophesies.

© Andreas F. Borchert | CC BY-SA 4.0