Church Ruin In Caen

Not the only one we'd see. No sign indicating what it was. The TI babe said it was "the old St. Etienne," which would be curious in that the ruin is a Gothic, clearly younger than the St. Etienne, a few blocks away. Whether it was destroyed by WWII bombardment, the Revolution, the Reformation, or a lightning strike, we'd like to know. Not on any of the maps we have. Nor is Google Maps any help.