(Δαῦνος or Δαύνιος). 1. A son of Lycaon in Arcadia, and brother of Iapyx and Peucetius. These three brothers, in conjunction with Illyrians and Messapians, landed on the eastern coast of Italy, expelled the Ausonians, took possession of the country, and divided it into three parts, Daunia, Peucetia, and Messapia. The three tribes together bore the common name Iapygians. (Ant. Lib. 31.)
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890