In Greek mythology, King Teucer (or Teukros) was said to be the son of the river-god Scamander and the nymph Idaea, and the first king of the land later called the Troad. Before the arrival of Dardanus, the region was known as Teucria and its people as Teucrians, named after him. He gave his only daughter Batea in marriage to Dardanus, and upon his death — having no son of his own — his kingdom was absorbed into Dardania. In most accounts he is remembered as a distant ancestor of the Trojans.
Adapted from Wikipedia, "King Teucer" · CC BY-SA 4.0
I.Mythology
Before the arrival of Dardanus, the land that would eventually be called Dardania (and later still the Troad) was known as Teucria and the inhabitants as Teucrians, after Teucer.
According to Virgil, Teucer was originally from Crete but left the island during a great famine with a third of its inhabitants. They settled near the Scamander river, named after Teucer's father, not far from the Rhaetean promontory. However, Dionysius of Halicarnassus states that Teucer had come to the Troad from Attica, where he was a chief of the Xypete region. In both cases he ended up in the region that would be known as the Troad.
His company was said to have been greatly annoyed by a vast number of mice during their first night in the region. Teucer had previously been directed by an oracle before leaving Crete to build a settlement in the place where he should be attacked in the night by an enemy sprung from the earth — "where the earth-born should attack them"; since mice had attacked them during the night, he resolved to settle there. He probably founded the city of Hamaxitus and established it as his capital.
Teucer is said to have had a felicitous reign, as he was successful in all of his undertakings. He was said to have been the first to build a temple to Apollo Sminthius, or Apollo the "destroyer of mice," since Apollo was said to have destroyed the mice infesting that area during Teucer's reign.
II.Family and succession
Batea (also known as Batia or Arisba), King Teucer's daughter and only child, was given in marriage to Dardanus. In Lycophron's Alexandra, Dardanus was said to wed Arisba from "Crete's royal house."
Dardanus received land on Mount Ida from his father-in-law when Teucer died, since Teucer did not have a biological son. There Dardanus founded the city of Dardania. After Teucer's death, his kingdom was incorporated into that of Dardanus, and the entire region came to be known as Dardania.
III.Legacy
In later times, the people of Troy often referred to themselves as "Teucrians." For example, Aeneas is called the "great captain of the Teucrians." In most myths mentioning King Teucer, he is described as a distant ancestor of the Trojans.
Diodorus states that Teucer was "the first to rule as king over the land of Troy," while in the Aeneid Anchises recalls him as the Trojans' "first forefather." This suggests that King Teucer was considered the first figure to bear the bloodline of the Trojans, as his father Scamander did not carry such acclamations.
Some academics suggest a connection between Teucris in old Greek texts and Tjeker in old Egyptian texts.