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_203_172 ( id number, "title" text, "date of creation" text, "surname" text, "first titular" text )

### Question ###
which duke has the same date of creation as the duke of coimbra ?

### Accurate SQL ###

SELECT "title" FROM table_203_172 WHERE "title" <> 'duke of coimbra' AND "date of creation" = (SELECT "date of creation" FROM table_203_172 WHERE "title" = 'duke of coimbra')