To be filed under ‘Flags I Never Knew Existed': the Québécois heraldist Maurice Brodeur designed a flag commemorating the French explorer Jacques Cartier, founder of Quebec and Canada. The banner was designed to hang as an ex-voto in the Memorial Basilica of Christ the King in Gaspé, conceived in the 1920’s as an offering of thanks for the four-hundredth anniversary of the claiming of Canada by Cartier. The Great Depression brought the project to a halt, and the church was finally finished in 1969 as a modernist cathedral in wood — the only wooden cathedral in Catholic North America.
Was the flag ever actually executed? I don’t know, but I doubt it.