More than a few readers have asked us to take another look at a topic we broached last week — the history of Cordoba, Spain. Historic Cordoba has been in the news because the proposed Islamic center near ground zero is part of what’s called the Cordoba Initiative. The center was going to be called Cordoba and its backers said it was in honor of a golden age of interfaith relations. Others were aghast at the name because Muslims conquered Cordoba’s Christians. The mosque’s backers are now calling it Park 51.