History of the English Language
A short history of the origins and development of English
The history of the English language really started with the arrival of three Germanic tribes who invaded Britain during the 5th century AD. These tribes, the Angles, the Saxons and the Jutes, crossed the North Sea from what today is Denmark and northern Germany. At that time the inhabitants of Britain spoke a Celtic language. But most of the Celtic speakers were pushed west and north by the invaders - mainly into what is now Wales, Scotland and Ireland. The Angles came from Englaland and their language was called Englisc - from which the words England and English are derived.
rest of the article here
Then there's the map over here
So we've got Celts, Romans, Anglo-Saxons, Vikings, and Normans by the 11th century. I've noticed that quite a few people I've met, that speak English as a second language, have trouble with the "th" sound. I'm not fluent in any other languages, perhaps one of you can help me out. Where did we get the "th" sound? Who else uses it?