John Swanton studied the Lamhatty word list and identified the language as a Timucuan dialect, suggesting it was intermediary between Timucua and Muskogean.

The language shows significant Alabama influence, including the Muskogean same-subject suffix -t. In 1707 an Indian named Lamhatty arrived in the British colony of Virginia, eventually arriving at the estate of Colonel John Walker.

According to Beverley, Walker began treating Lamhatty like a slave once he learned other Tawasa were enslaved.

Studying the word list in the early 20th century, John Swanton noted the similarity with the Timucua language, and suggested Tawasa was an intermediary with Muskogean.

Correspondences with Muskogean and Timucua are, Although ássick 'moon' appears to be an Alabama form, its compounds are Timucuan: