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_41 ( bulgarian_commander VARCHAR, battle VARCHAR, date VARCHAR )

### Question ###
What is the Bulgarian Commander in Autumn 1040 at the Battle of Thessalonica?

### Accurate SQL ###

SELECT bulgarian_commander FROM table_name_41 WHERE battle = "battle of thessalonica" AND date = "autumn 1040"