Polhill Anglo-Saxon cemetery but following the collapse of Roman rule in 410 CE, many signs of Romano-British society began to disappear, replaced by those of the ascendant Anglo-Saxon culture. Later Anglo-Saxon accounts attribute this change to the widescale invasion of Germanic language tribes from northern Europe, namely the Angles, Saxons, and Jutes. Archaeological and toponymic evidence shows that there was a great deal of syncretism, with Anglo-Saxon culture interacting and mixing with the Romano-British culture. The Old English term "Kent" first appears in the Anglo-Saxon period, and was based on the earlier Celtic-language name "Cantii". Initially applied only to the area east of
Anglo-Norman language of the language. By the late 15th century, however, what remained of insular French had become heavily anglicised: see Law French. It continued to be known as "Norman French" until the end of the 19th century even though, philologically, there was nothing Norman about it. One notable survival of influence on the political system is the use of certain Anglo-French set phrases in the Parliament of the United Kingdom for some endorsements to bills and the granting of Royal Assent to legislation. These set phrases include: The exact spelling of these phrases has varied over the years; for example, "s'avisera"