Proto-language, hypothetical, or reconstructed, languages from which a number of historically attested, or documented, known languages are hypothetically descended.

The earliest historically attested inhabitants were Celts.

Attested historically for more than 1,000 years, they developed Judeo-Malayalam language, a dialect of the Malayalam native to the state of Kerala.

The comparative method aims to prove that two or more historically attested languages are descended from a single proto-language by comparing lists of cognate terms.

Their historically attested male-line ancestors are known as far back as the 14th century.

The ethnonym of the Mohe bears a notable resemblance to that of the later historically attested *Motgit (in Middle Chinese.

This kind of variance between written and spoken language is attested historically in other cultures and may be common.

The two historically attested persons bearing this name are:

Some of the Jewish tribes of Arabia historically attested include:

Of the eleven different historically attested Sami languages or dialects, only nine have survived to the present day with most in danger of disappearing as well.