Guandao
Rajah of Minyue and Langkasuka
My grandfather and all of his ancestors were from Newquay in Cornwall. It seemed more appropriate to play as the Celts rather than England because the Celts would have Cornish towns. I haven't played as England in Civ VI so maybe the Cornish towns are there, but Victoria is annoying and the English abilities are bland...
So I'll miss the Celts.
Edit: No Cornish cities in England's list, closest is Plymouth in Devon
I think it was only in Civ5 that Cornish cities started really appearing on the Celtic city-list. Though according to this map, Tintagel was on the Celtic city-list in Civ2.
Some people seemed to think the Celtic City-list in Civ5 was a mess. It was alternating between Scottish, Irish, Welsh, Cornish, Breton, and Manx cities. Previous games used ancient settlements in mainly Gaul and Britannia. Part of the criticism of the Celtic blob in Civ5 was that it couldn't decide which to focus on, classical Gaulish/Briton Celts vs. Medieval/Modern Celtic nations....