Table: duchesses_wurttemberg
Columns: birth
marriage
became_duchess
ceased_to_be_duchess
death
spouse

Question: What is the Birth of the lady that has a Became Duchess on 18 august 1593 husband's accession?
SQL: SELECT "birth" FROM duchesses_wurttemberg WHERE "became_duchess" = '18 august 1593 husband''s accession'

Question: Who is the Spouse of the Duchess that has a Birth on 29 october 1451?
SQL: SELECT "spouse" FROM duchesses_wurttemberg WHERE "birth" = '29 october 1451'

Question: Who is The Spouse of the Duchess that has a Became Duchess  on 31 october 1733 husband's accession?
SQL: SELECT "spouse" FROM duchesses_wurttemberg WHERE "became_duchess" = '31 october 1733 husband''s accession'

Question: WHo Became Duchess that has a Death of 26 october 1614?
SQL: SELECT "became_duchess" FROM duchesses_wurttemberg WHERE "death" = '26 october 1614'

Question: What is the Spouse of the Duchess that has a Death on 6 april 1780?
SQL: SELECT "spouse" FROM duchesses_wurttemberg WHERE "death" = '6 april 1780'