Table: princess_royal_history
Columns: order
name_dates
princess_royal_from_date_to_date
parent
date_married
husband_dates

Question: Who was the parent on the order of 6?
SQL: SELECT "parent" FROM princess_royal_history WHERE "order" = 6

Question: Who was the husband date that was married in 1858?
SQL: SELECT "husband_dates" FROM princess_royal_history WHERE "date_married" = '1858'