Brother Abelard's Treatise on the hobb
Now it be knowne to alle learned men that the goblyn wiffe will bear her young in the same manner as to the dwarfe and likewise they shall be served by their broode. However it is to my minde knowne a wondere and fact gained from my studie and after much discourse with those beeste called puca which men name hobbs or hobbgoblyn. Much tyme I have passed in discourse with both men who traded with the hobbgoblyn and even one tyme I spake myself with a verry olde hobb whom was a friend to the church and also considered wise. This I have learned.
As the goblyn wiffe will beget a litter or broode as to her kind, so will that broode change in their manner and character as to her aliments and lodging. If she doth dine on mutton or meat her broode will be strong and sauvage yet if she dine on weeds and grains they be meek. Now a learned person might reasone thus surely should she dine on the fleshe of men her broode shall be terrible beests indeede for they will growe as fromme terrible deeds. What a wondere thus to find that the broode of the goblyn fed of that fleshe is both vigorous and learned among it’s kinde. It is knowne goblyns are wilde and sauvage however the hob being wilde too yet is industrious. Where goblyn will think only to steale and break, the hob will trade when they cannot take. Men say the hobbgoblyn is more dire than the goblyn as they fight with greater skill, yet more will fear a goblyn which is as a ferocious beest and they knowe no reasone.