Like Sweeden, Finland, Denmark and Iceland all resemble this. You might just google [ flag "white cross"] and get a whole bunch of similar "logos". Hell, my province of Quebec has blue boxes and white cross, just add the Fleur-de-lys, and darken the blue for a perfect copy.

Or maybe the flag of martinique?
http://www.indexmundi.com/en/facts/2002/martinique/flag_description.html