As I am learning, or attempting to learn, Welsh I changed my preferred language to Welsh via Settings > General > Language & Region > Other Languages > iPad Languages > Other Languages > Cymraeg. All well and good. However, as a couple of apps seemed to have a bug and wouldn't work at all in Welsh (not just not support Welsh, they failed to work at all), I decided to switch back to only English. Everything changed back except the iPad's Keyboard, which still resolutely shows dychwelyd for return and dad-wneud for undo. These are not showstoppers and I can live with this but there may be other, as yet undiscovered, Welsh remnants in there somewhere, so why has this happened and how can I fully restore to the default English Language? Diolch yn fawr!