Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
PILBEAM
As described in historical dictionaries
Patronymica Britannica (1860)
PILBEAM. A species of tree which I cannot identify, probably so named from its suitableness for the shaft of a spear ; A- Sax. pil. I have not met with this name out of the county of Sussex, where it i3 sometimes pronounced Pilbin.