Early form of the Spanish language that was spoken on the Iberian Peninsula from the 10th century until roughly the beginning of the 15th century, before a consonantic readjustment gave rise to the evolution of Modern Spanish.

The continuum of languages derived from Vulgar Latin spoken in the Italian peninsula between circa 960 and the establishment of the Accademia della Crusca in 1582.

An early form of the Cornish language, used circa 800-1200 AD.

The language Proto-Norse or Proto-Scandinavian.

The Welsh language as it existed from about 800 until the early twelfth century (when it developed into Middle Welsh), not readily intelligible to modern Welsh speakers.

The Frankish language.

The historical period of the First Babylonian Dynasty. / The Akkadian language spoken at that time.

The Egyptian language as spoken from 2600 to 2000 BC during the Old Kingdom and First Intermediate Period.

The Old East Slavic language.

The Old Norse language as spoken and written in Iceland in the Middle Ages, quite similar to Old Norwegian, but differing most markedly in orthography and, to a lesser extent, in phonology.