French modified Maltese Cross.
This one has St Martin (last Pope to be recognized as a martyr and the intercessor Saint for Truth and Free Will ) on one side and Our Lady of Lourdes on the other (intercessor for healing)
Maltese cross was used originally by the Crusaders, specifically by Richard the Lion Hearted (who's mother was French ..Eleanor de Aquitaine and he grew up in Southern France, eventually become the Duke and ruling most of Southern France) and the Templars.
The fleur de lis was used by many countries but was particularly recognized as French during the French Monarch period.
For ages, the Maltese Cross was the symbol of the Templars until Pope Clement I banished them and King Phillip IV of France arrested all of them on likely false heresy charges. (The King was deeply in financial debt to the Templars) Sometime after that, the King put his "stamp" on the Maltese Cross by adding the fleur de lis points to the four corners to demonstrate his rule and further the excising of the Templars from society. Politics, religion, royalty The original Game of Thrones. The surviving Templars fled to Spain and Portugal and were either absorbed by existing Orders or slowly died out.
Note the fleur de lis on Phillip IV crown
In Toledo, Spain there is the Museum of the Templars and there is a whole section dedicated to the fall of the Templars and the great efforts made to excise them from society as well as the history of the Maltese Cross. Museo de los Templarios
Here is the modified Maltese Cross that replaced the Templar Cross after their banishment. Note the Fleur de lis and the blue, which were both symbols of the French Monarchy.
The fleur de lis was added to all four points of the Maltese Cross during the period of the "French Popes" or the Avignon Papacy when the Pope ruled from Avignon region in the South of France and the King of France had great influence. All of this happened during the 14th century.
In essence, it symbolizes French Catholicism and was brought to Canada and French occupied areas by Franciscan Friars (Friars Minor) during the 1500/1600