Fiachra

From Old Irish Fiachrae, possibly from fiach "raven" or fích "battle" combined with rí "king". This was the name of several legendary figures, including one of the four children of Lir transformed into swans for a period of 900 years. This is also the name of the patron saint of gardeners: a 7th-century Irish abbot who settled in France, usually called Saint Fiacre.