CREATE TABLE table_name_59 (ceased_to_be_duchess VARCHAR, marriage VARCHAR)

When did the woman, who was married 22 may 1657, cease to be the duchess?
SELECT ceased_to_be_duchess FROM table_name_59 WHERE marriage = "22 may 1657"
SELECT "ceased_to_be_duchess" FROM "table_name_59" WHERE "22 may 1657" = "marriage"