The earliest people who lived in Britain were the Celts and they spoke Celtic language back then. According to The Free Online Dictionary by Farlex, Celtic language is a branch of the Indo-European languages that was spread widely over Europe in the pre-Christian era.
Based on the website of The English Language History, there are a few major branches in the Indo-European family. They are Latin and the modern Romance languages (French); the Germanic languages (English, German, Swedish); the Indo-Iranian languages (Hindu, Urdu, Sanskrit); the Slavic languages (Russian, Polish, Czech); the Baltic languages of Latvian and Lithuanian; the Celtic languages (Welsh, Irish Gaelic) and Greek. Retrieved from http://linguatics.com/indoeuropean_languages.htm.
Today, the influence of the Indo-European language towards English can still be seen. Take the word ‘father’ as an example, in German, it is vater; in Latin, it is pater; in Sanskrit, it is pitr. These words, although in different languages, have the same origin – Indo-European language. Authors can see some common features from them. Based on ‘The Study of Language’ by George Yule, a cognate of a word in one language is a word in another language that has a similar form and, is or was, used with a similar meaning. Therefore, it can be said that the examples given above may have the same ancestor in the branch of Indo-European. English language has undergone changes through time. The historical changes of English are divided