Burg-wille
Bosworth & Toller Anglo-Saxon Old English Dictionary - burg-wille
According to the Old English Dictionary:
-welle, an;
- burg-wille
- f. A spring that supplies a burg(?) :-- Onlong bróces ðæt on burhwellan, of burhwellan on ðá burhwalles, C.D. iii. 394, 28. burg-wille