Date: Sat Nov 20 00:03:33 EST 1999
Subject: A.Word.A.Day--eyas
eyas (EYE-uhs) noun

A nestling hawk or falcon.

[Middle English eias, from an eias, alteration of *a nias, an eyas,
from Old French niais, from Latin nidus, nest.]

And the "eyrie" is the nest where eagles and falcons lay their eggs.

"Aerie" is the most frequent crossword puzzle variant spelling I see...

Dear FB: I just noticed today that eyre is word for a
justice in a lower English court. So Jane must have had
a judge as foundation of patronymic.