CREATE TABLE table_37215 ("Name" CLOB, "Birth" CLOB, "Marriage" CLOB, "Became Duchess" CLOB, "Ceased to be Duchess" CLOB, "Death" CLOB, "Spouse" CLOB)

Which Spouse has a Birth of 30 may 1653?
SELECT "Spouse" FROM table_37215 WHERE "Birth" = '30 may 1653'
SELECT "Spouse" FROM "table_37215" WHERE "Birth" = '30 may 1653'