Language in Trinity
Talk Jersey was heavily anglicised in the 19th and 20th centuries so English is universal. You'll see French signage, but if it looks mis-spelled, it's actually the local language of Jèrriais. This is still spoken by a dwindling minority, as a badge of identity rather than practical communication. The problem is that each parish developed its own dialect, so they could barely understand each other or the parent tongue of Norman French. Jèrriais is taught in schools but this is a modern standardised version, so it feels like a foreign invention not the way grand-methe used to talk.
Source: Wikivoyage · CC BY-SA 4.0. Text may be shortened for this guide.