The Bidai were a distinct tribe of Native Americans of broad Atakapan cultural and linguistic stock who, when first encountered by Europeans, were primarily located along the central Trinity River in Texas. They were among the oldest of the Texas tribes, part of the Mossy Grove Tradition that has been traced back at least 2,000 years. The Bidai were the most inland, western and northern located of the Atakapan subgroups; others such as the Akokisa and Atakapan proper lived in the coastal region between the Brazos and Achafalaya Rivers. Bidai commonly visited and traded with other friendly tribes, both among their Atakapan cousins and others, principally the Hasanai or Tejas, who were a subgroup of Caddoan peoples living in eastern Texas near the Angelina River.
Click here to learn the details of the Bedai tribe, and their network of trails that later became a major entry route for American colonists moving to Texas.