The CORRANCE name is believed to originate in France  - Corrancé  I understand that it means "Son of Odhran" or "Palefaced"

The Crest and Coat of Arms belongs to only a direct descendant of the person granted them in the first place. It may even be me …..  This Armorial Achievement (to give them their proper name) was granted to Frederick Corrance of Parham Hall & Rougham, Suffolk in 1619
Source: The General Armoury, Sir Bernard Burke

The Arms - Argent (Silver) on a Chevron between three ravens sable (black) as many leopards faces Or (Gold) According to Fairbairn;s Crests of the families of Great Britain & Ireland the raven has its wings open, and not as depicted above.

The Crest -  A raven, the dexter claw (front) resting on an escutcheon sable (shield black) charged with a leopards face Or (Gold)

Symbolism:
Leopard or Ounce Valiant and hardy warrior who enterprises hazardous things by force and courage
Raven  Divine providence
Chevron Protection; Builders or others who have accomplished some work of faithful service

Gold (Or) Generosity and elevation of the mind
Silver or White (Argent) Peace and sincerity
Black (Sable) Constancy or grief