йота в лонгобардском алфавите есть поскольку лонгобарды из готов:

http://en.wikipedia.org/wiki/Lombardic_language

Longbardic fragments are preserved in runic inscriptions, in Latinized forms, and in transcriptions influenced by Old High German orthography. This Lombardic alphabet, as commonly transcribed, consists of the following graphemes:

a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q(u), r, s, ʒ, t, þ, u, w, z