You have The Northumberland down as 1898 Colt/Braid. The club was founded in 1898 but the original course had nothing to do with Colt or Braid. Colt designed the new course in 1914 and Braid visited in 1919 and made some changes. It isn't clear how much of the current course is Colt and how much Braid.
Great resource, by the way.