Noble's 2nd Area is San Mariano. His new companion Elder Cajumban is the District Leader.
Google Earth of San Mariano. It feels living on a very big island in the middle of a river.
Noble mentioned that Ilagan is a big city next to San Mariano. Perhaps he didn't realize that the mission home in Cauayan is close also on the left.
San Mariano has the "Jan" river on one side and Ilagan river on the other.