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_31 ( spouse VARCHAR, became_duchess VARCHAR )

### Question ###
Who is The Spouse of the Duchess that has a Became Duchess on 31 october 1733 husband's accession?

### Accurate SQL ###

SELECT spouse FROM table_name_31 WHERE became_duchess = "31 october 1733 husband's accession"