CREATE TABLE table_204_10 (id DECIMAL, "ecclesiastical jurisdictions" TEXT, "latin name" TEXT, "type" TEXT, "rite" TEXT, "ecclesiastical province" TEXT, "established" TEXT, "area  ( km2 ) " DECIMAL)

what was the first dioceses established ?
SELECT "latin name" FROM table_204_10 ORDER BY "established" LIMIT 1
SELECT "latin name" FROM "table_204_10" ORDER BY "established" NULLS FIRST LIMIT 1