Hi there,

Middle Voice:

(gram.), that is the form of the verb by whish its subject is represented as both the agent, or doer, and the object of the the action, that is, as performing some act to or upon himself, for his own advantage...

Ég eignast sverð. Sverd komst í eigu mína. Ég verð eigandi sverz.

Í become owner of sword. Sword came into my ownership. I will become owner of sword.

Af því mér var gefið það.   Af því ég keypti það.  Af því ég stal því. Af þvi ég eignaði mér það.

Because it was given to me. Because I bought it. Because I stole it. Because I decleared it to me.

By Icelandic tradition [oldest law ] The owner is passive by its ownership.

Negligence meant deprivation.

The woman that "eignast" felt most oft that she were under pressure or in peine.

Konan[nominative] eignast baby [accusative].

Slave gat "eignast sig" [middle voice?] but the doer technically was his former owner.

Passive Voice:

the voice used to indicate that the grammatical subject of the verb is recipient (not the source) of the action denoted by the verb.

In practice verb have at least to infintives. The other with most often unlimeted meanings,

that one noted with "e'st" as in "Chri'st". From að Tala, að talast. að Eiga, að Eigast. að Eigna, að Eignast. 

Thanks Uoden

Iclandic is  not germanic or latin. Bretagne is not Versailles

Royal Danish speculation of "Icelandic Middle Voice" remains wrong until

the day Icelander will obey and use it.

Að eiga sig. Is our Middle voice as before. Do not bother.