Thanks for that link, FreddyHeadey.
Nice surprise to see our lovely Sarah Morgan starting it off!

DtG: Cranbrook was used as a tune for WSW for over a century before it was taken for Ilkley Moor, in fact it was the most commonly used tune for WSW until 'Winchester Old' was popularised by Hymns Ancient and Modern from 1861.

('Winchester Old' was chosen apparently because nobody sang it- i.e. it wasn't specifically tied to any particular place.)