
1) Celtic Britons
Found on
https://www.crosswordclues.com/clue/ancalites

The Ancalites were a Celtic tribe, probably living around the Thames Valley area in the 1st century BC. They are known only from the writings of Julius Caesar. Caesar made his second invasion of Britain in 54 BC, and achieved some measure of success, advancing as far as modern day Greater London, and restoring a friendly king, Mandubracius of the ...
Found on
http://en.wikipedia.org/wiki/Ancalites

According to Caesar, the Ancalites were a people inhabiting parts of Berkshire and Wiltshire at the time of the Roman invasion of Britain.
Found on
http://www.probertencyclopaedia.com/browse/CXAA.HTM
No exact match found.