[antir-heralds] metronymics in Old Norse

[Lindsey E. Peterson-Pope]

Greetings!

I am very new, as I think I've said before, and I want to make sure I
have this right. My understanding is that metronymics were uncommon
but not unheard-of in Old Norse, and that they are registrable. My
persona is from somewhere around AD 800, right around the middle of
what is modern Sweden. I have chosen {AE}sa as a given name
(documented in Geirr Bassi Haraldsson's The Old Norse Name on p.17). I
would prefer to choose a metronymic (despite its implication of an
unknown father). Does RfS II.2 mean that I can choose any (documented)
female ON name and (by putting it in genitive case) turn it into a
metronymic?
Also, if I wish to be authentic, would it be better to choose a
patronymic (I can already hear you saying yes)? And if so (I know, I
know, yes), does II.2 mean that I can choose any (again, documented)
male ON name and turn it into a patronymic?
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Aesa nobynameyet