Historical clue formulations

• Catalonia neighbor — 2023-07-07
• Neighbor of Catalonia, in Spain — 2023-06-21
• Old kingdom of Spain — 2019-10-20
• Medieval Spanish kingdom — 2018-03-25
• Home to Henry VIII's Catherine — 2017-05-17
• It's between Navarre and Catalonia — 2017-02-24
• Catherine of ___ — 2017-02-20
• Home to Henry VIII's Catherine — 2015-12-09
• Kingdom that once included Sicily and Sardinia — 2010-05-21
• One of Isabella I's kingdoms — 2009-04-23
• One of Ferdinand II's kingdoms — 2007-12-21
• Where Zaragoza is — 2006-09-17
• Part of Isabella I's realm — 2005-08-28
• Catherine of ___ — 2004-11-09
• Whence Catherine — 2002-08-29
• Catherine of ___ — 2001-11-28
• Ebro feeder — 2000-04-30