Historical clue formulations

• County that's home to Plymouth, England — 2021-11-13
• English county that's the setting for Agatha Christie's "And Then There Were None" — 2019-10-31
• English county whose seat is Exeter — 2016-11-05
• Red English cattle — 2016-08-06
• English county — 2012-07-08
• Dartmoor setting — 2009-03-14
• English cattle breed — 2006-03-22
• Cattle variety — 2005-08-04
• Breed of red cattle — 2005-02-07
• English county from which the Pilgrims set sail in 1620 — 2004-09-11
• English cattle breed — 1997-12-31
• Cow of English origin — 1996-05-17
• Cattle breed — 1995-06-16
• Breed of red cattle — 1994-10-01