CREATE TABLE table_37106 ("Name" CLOB, "Birth" CLOB, "Marriage" CLOB, "Became Duchess" CLOB, "Ceased to be Duchess" CLOB, "Death" CLOB, "Spouse" CLOB)

What is the birth date of the duchess who married on 1 May 1844?
SELECT "Birth" FROM table_37106 WHERE "Marriage" = '1 may 1844'
SELECT "Birth" FROM "table_37106" WHERE "Marriage" = '1 may 1844'