When was the duchess, who was married on 11 july 1643, born?
CREATE TABLE table_name_12 (birth VARCHAR, marriage VARCHAR)
SELECT birth FROM table_name_12 WHERE marriage = "11 july 1643"
### Context: CREATE TABLE table_name_12 (birth VARCHAR, marriage VARCHAR) ### Question: When was the duchess, who was married on 11 july 1643, born? ### Answer: SELECT birth FROM table_name_12 WHERE marriage = "11 july 1643"