Based on the clue 'when you file one of these with the us postal service you may get a welcome kit at your new home', what is the answer?

What is associated with: he offed the second duke of buckingham in 1483? Based on the clue 'priscilla was the original title of longfellows poem about the courtship of this puritan captain', w… Based on the clue 'dishes flavored or garnished with these rare costly fungi are referred to as a la perigourdine', wha… Based on the clue 'a synonym for journey its also an upper crust nickname for a guy with roman numeral iii in his name'… Based on the clue 'in 404 bc a starving athens was forced to give up its long fight in this war', what is the answer? What is associated with: he played the spy who came in from the cold in 1965? What is referred to by 'ben gurion'? Based on the clue 'chicken livers water chestnuts wrapped in bacon fortune cookies to follow', what is the answer?