The Farrell ClanCoat of Arms

Black greyhound crest: in Irish folklore and particularly in Gaelic poetry and mythology the hound is often used as an epithet to describe a valiant warrior.
Golden crown of a duke: (as in the Lords of Annaly: the Farrells). The gold colour denotes generosity and elevation of mind.
Golden lion rampant: (rearing): the lion signifies bravery and nobility.
Green field of the shield: green signifies hope, love and joy.
Motto: Prodesse Non Nocere (To do good, not to do evil).

Official Coat of Arms