thumb|right|[[Great Britain and adjacent islands in the 5th century AD, before the invasion and subsequent founding of Anglo-Saxon kingdoms.
thumb|right|Great Britain and adjacent islands in the 5th century AD, before the invasion and subsequent founding of Anglo-Saxon kingdoms.
Prydain (, ; Middle Welsh: Prydein) is the modern Welsh name for Great Britain.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).