Bee Hive Oven Turned Window

So as we are picking the plaster off of the side of the house we have made some very interesting discoveries. This is a neat one... On the gable end we found brick around a double window. From what we know of building history and time periods, we believe that this used to be a walk-in fireplace. The fireplace bumped out into a beehive oven on the outside. When previous owners ( date to be determined) moved the fireplace to the left, they filled in this wall and made the hole into a double window. Then they covered the whole building with the white plaster coat to make it look uniform. The brick indicates this change from oven to double window. Maybe this section of the original house was once the kitchen? How fascinating is that?