
1) Historical Celtic people 2) Tribe of ancient Britain
Found on
https://www.crosswordclues.com/clue/belgae

The Belgae were a group of tribes living in northern Gaul, between the English Channel and the west bank of the Rhine, from at least the 3rd century BC. They were discussed in depth by Julius Caesar in his account of his wars in Gaul. Some peoples in Britain were also called Belgae and O`Rahilly equated them with the Fir Bolg in Ireland. The Belg....
Found on
http://en.wikipedia.org/wiki/Belgae

any of the inhabitants of Gaul north of the Sequana and Matrona (Seine and Marne) rivers. The term was apparently first applied by Julius Caesar. ...
Found on
http://www.britannica.com/eb/a-z/b/42

Name given by Roman authors to people who lived in Gaul, north of the Seine and Marne rivers. They were defeated by Caesar in 57 BC. Many of the Belgae settled in southeastern England during the 2nd...
Found on
http://www.encyclo.co.uk/local/20688

The Belgae were a collection of German and Celtic tribes who anciently inhabited the country extending between the Marne and Seine and the lower Rhine, and bounded north-west by the sea. Caesar, on his invasion of Britain, found them established also in Kent and Sussex.
Found on
http://www.probertencyclopaedia.com/browse/CXB.HTM

an ancient chiefly Celtic people that lived in northern Gaul.
Found on
https://www.infoplease.com/dictionary/belgae
No exact match found.