I have noticed there are quite a few rivers and towns/ villages using Bree, Bride, Bredy etc in both Dorset and Kent. The most obvious being near Abbotsbury in Dorset around the villages of Little Bredy and Long Bredy, which, as many here will now, is an area rich in prehistoric sites. It would be interesting to know when and why these namings occured and whether they do pertain to the 'goddess' Bridget.
Apparently even the terms 'Celt' and 'Celtic' were originally just R*man words to diss scary barbarian types ('you callin' me a celt?!'), yet it has come to sum up the culture and ethnicity of a range of quite disparate peoples.