Ek

As defined by A Concise Dictionary of Old Icelandic (Geir Zoëga):

ek Old Icelandic word can mean:

ek

I) pers. pron. I;

ek

in poetry and old prose a pronominal k is suffixed to the verb, emk = em ek, vask = vas ek; sák = sá ek; mundak = munda ek; even if preceded by ek: ek sék, ek sitk; a preceding g becomes by assimilation k, hykk = hygg ek; the pronominal k is inserted between the suffixed negative, -a or -at, and the verb, sáka = sá ek-a, I saw not; veitka = veit ek-a, I know not.

ek

II) from aka.

Possible runic inscription in Younger Futhark:ᛁᚴ