The flag of Guernsey was adopted in 1985 and consists of the red Saint George's Cross with an additional gold Norman cross within it. The creation was prompted by confusion at international sporting events over competitors from Guernsey and England using the same flag. The Government of Guernsey carried out official studies in 1906 and 1935 to determine any unique and identifiable historical flags that Guernsey could use to represent it.
The gold cross represents William the Bastard, Duke of Normandy.