South of U.S. Route 20, at the intersection of four roads in North Oxford, Massachusetts, is the Barton Center for Diabetes Education. Directly next to it is an old historical home. It may look like the many others throughout the area, but the name of the center hints that this is no ordinary house. The humble abode served as the birthplace of the founder of the American Red Cross, Clara Barton, one of the most influential women of the 19th century. Clara Barton was born on Christmas Day, December 25,…