Based on the clue 'buried treasure found on an islet in the tuscan ar...', what is the answer?

What is referred to by 'buried child'? What is associated with: buried in 1953 this leader was moved in 1961 to a less prestigious grave along the kremlin wal… Based on the clue 'buried in rome this poet wrote as his own epitaph ...', what is the answer? What is associated with: buried in santa clara cuba this revolutionary leader was born in argentina in 1928? Based on the clue 'buried with wife marion in florence oops with wif...', what is the answer? Based on the clue 'burkinabes live in this african country whose capi...', what is the answer? What is associated with: burlington pop 39000? What is referred to by 'burlington st albans rutland'?