CREATE TABLE table_20891 ("Archbishop" CLOB, "Born" CLOB, "Ordained Priest" CLOB, "Ordained Bishop" CLOB, "Appointed Archbishop" CLOB, "Vacated throne" CLOB, "Died" CLOB)

What date was the person ordained as a priest in December 1838 ordained as a bishop?
SELECT "Ordained Bishop" FROM table_20891 WHERE "Ordained Priest" = 'December 1838'
SELECT "Ordained Bishop" FROM "table_20891" WHERE "Ordained Priest" = 'December 1838'