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_42193 ( "Name" text, "Start of Reign" real, "End of Reign" text, "Birth Name" text, "Title" text )

### Question ###
What is the date of birth of the person who started their reign in 1986?

### Accurate SQL ###

SELECT "Birth Name" FROM table_42193 WHERE "Start of Reign" = '1986'