Esto'k Gna

The Esto'k Gna, who called themselves Estok, were known to the Spanish as the Comecrudo or Carrizo. They held the Río Bravo delta in northern Tamaulipas and southern Texas, and spoke extinct Comecrudan tongues, grouped within Coahuiltecan but distinct from Coahuilteco.

Seasonally seminomadic, they wintered in canyons and moved each spring to the Sabinas to fish, hunting with bows and a few traded muskets. They enter the written record in 1747, when their leader Captain Santiago answered Escandón's smoke signals and named thirty native bands along the lower river.

A mission was founded near Reynosa in 1749, and in 1750 Escandón counted 149 Comecrudo settled there; when Reynosa moved in 1802 most families stayed on the old bank. They bore Comanche and Kiowa raids from the plains, and an 1827 boundary commission left the last detailed portrait of their daily life.