Historical clue formulations

• Loser at Waterloo — 2021-02-10
• Famous crosser of the 115-Across — 2016-11-20
• With 41-Down, title teen in a 2004 indie hit — 2013-05-14
• Author of the advice — 2002-06-27
• Pastry named for a French emperor — 2001-08-20
• Continental system proponent — 1997-08-16
• Creamy pastry — 1996-04-09