About the Duchy of Savoy flag

The flag of Savoy is white cross on a red field. It is based on a crusader flag, and as such is identical in origin to the flag of the Knights of Malta (whence the modern Flag of Malta and of the Sovereign Military Order of Malta), and others (flags of Denmark and Switzerland, with inverted colors those of England and Genoa, among others). It was possibly first used by Amadeus III, Count of Savoy, who went on the Second Crusade in 1147. In the 18th century, the letters "FERT" were sometimes added in the cantons to distinguish the flag from the Maltese one.

You may also be interested in