The Ais or Ays were a Native American people of eastern Florida. Their territory included coastal areas and islands from approximately Cape Canaveral to the Indian River. The Ais chiefdom consisted of a number of towns, each led by a chief who was subordinate to the paramount chief of Ais; the Indian River was known as the "River of Ais" to the Spanish. The Ais language has been linked to the Chitimacha language by linguist Julian Granberry, who points out that "Ais" means "the people" in the Chitimacha language. The Ais were hunter-gatherers and food was plentiful. They ate fish, turtle, shellfish, cocoplums, sabal palm berries and other gathered fruits. Prior to contact with European colonizers, the Ais population had grown to several hundred thousand and may have flourished for over 10,000 years. A burial mound, used by the Ais tribe for 500 to 1,000 years rises about twenty feet in Old Fort Park on Indian River Drive in Fort Pierce. This location later became an Army fort used during the Second Seminole War (1838-1842) and it may be the location of a Spanish settlement, mission and military outpost dating back to 1567. The burial mound is several hundred feet around. The Indian River, (called the "Rio de Ais" by the Spanish colonizers) flows by within sight. The best single source for information on the Ais at the end of the 17th century is Jonathan Dickinson's Journal, in which he makes observations on their appearance, diet, and customs. Dickinson and his party were shipwrecked, and spent several weeks among the Ais in 1696. By Dickinson's account, the chief of the town of Jece, near present-day Sebastian, was paramount to all of the coastal towns from the Jaega town of Jobe (at Jupiter Inlet) in the south to approximately Cape Canaveral in the north (that is, the length of the River of Ais). The Ais had already had considerable contact with Europeans by this time. The Spanish became acquainted with the Ais in middle of the 16th century. In 1566 Pedro Menéndez de Avilés, founder of St. Augustine, Florida, established a fort and mission at an Ais town, which the Spanish called Santa Lucía. After the Ais attacked the fort, killing 23 of the soldiers, the Spanish abandoned the fort and mission. Oathaqua was a major chief of the Ais. Governor Mendez de Canco reported in 1597 that the this chief