Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_16 (birth VARCHAR, marriage VARCHAR)

### Question ###
What is the birth date of the duchess who married on 1 May 1844?

### Accurate SQL ###

SELECT birth FROM table_name_16 WHERE marriage = "1 may 1844"