Fiachra m
Irish Gaelic: apparently a derivative of fiach raven (cf. FEICHÍN (SEE Feichín) and FIACHRA (SEE Fiachra)). A 7th-century St Fiachra settled at Meaux in France, and his cult became popular in that country, where he came to be regarded as the patron of gardeners. Through the Hôtel de Saint Fiacre in Paris he gave his name to the vocabulary word fiacre, since these carriages were originally available for hire outside the building.
First names dictionary. 2012.