Question: When did the person born on 3 May 1446 cease to be countess?
SQL: SELECT "Ceased to be Countess" FROM "2-1279636-7" WHERE "Birth" = '3 May 1446';

Question: Who was the father of the person born in 1363?
SQL: SELECT "Father" FROM "2-1279636-7" WHERE "Birth" = '1363';

Question: When was the marriage of the person who died on 17 December 1471?
SQL: SELECT "Marriage" FROM "2-1279636-7" WHERE "Death" = '17 December 1471';