Historical clue formulations

• Mandela portrayer in "Invictus," 2009 — 2012-09-19
• Ex-slave — 2006-12-13
• Ex-con — 2005-08-28
• He's out of stocks and bonds — 1999-10-23
• One released from bondage — 1998-09-07
• "Driving Miss Daisy" co-star — 1997-09-25
• Serf's opposite — 1996-10-25