CREATE TABLE table_6079 ("Image" CLOB, "Father" CLOB, "Birth" CLOB, "Ceased to be Duchess" CLOB, "Death" CLOB, "Husband" CLOB)

Which duchess was born on 9 october 1574?
SELECT "Ceased to be Duchess" FROM table_6079 WHERE "Birth" = '9 october 1574'
SELECT "Ceased to be Duchess" FROM "table_6079" WHERE "Birth" = '9 october 1574'