Laodice was the daughter of Priam

Priam

Priam was the king of Troy during the Trojan War and youngest son of Laomedon. Modern scholars derive his name from the Luwian compound Priimuua, which means "exceptionally courageous".- Marriage and issue :...

 of Troy

Troy

Troy was a city, both factual and legendary, located in northwest Anatolia in what is now Turkey, southeast of the Dardanelles and beside Mount Ida...

 and Hecuba

Hecuba

Hecuba was a queen in Greek mythology, the wife of King Priam of Troy during the Trojan War, with whom she had 19 children. These children included several major characters of Homer's Iliad such as the warriors Hector and Paris, and the prophetess Cassandra...

. She is described as the most beautiful of Priam's daughters. Laodice refers to Helen as her junior even though Helen is probably 34 years old and yet she is more beautiful than her sister Cassandra

Cassandra

In Greek mythology, Cassandra was the daughter of King Priam and Queen Hecuba of Troy. Her beauty caused Apollo to grant her the gift of prophecy...

, who might be eighteen at the same time and who herself is described as the most beautiful living Trojan woman when she is given to Agamemnon

Agamemnon

In Greek mythology, Agamemnon was the son of King Atreus and Queen Aerope of Mycenae, the brother of Menelaus, the husband of Clytemnestra, and the father of Electra and Orestes. Mythical legends make him the king of Mycenae or Argos, thought to be different names for the same area...

 after the Trojan war

Trojan War

In Greek mythology, the Trojan War was waged against the city of Troy by the Achaeans after Paris of Troy took Helen from her husband Menelaus, the king of Sparta. The war is among the most important events in Greek mythology and was narrated in many works of Greek literature, including the Iliad...

.

Before the outbreak of the Trojan war Laodice fell in love with Acamas, son of Theseus

Theseus

For other uses, see Theseus Theseus was the mythical founder-king of Athens, son of Aethra, and fathered by Aegeus and Poseidon, both of whom Aethra had slept with in one night. Theseus was a founder-hero, like Perseus, Cadmus, or Heracles, all of whom battled and overcame foes that were...

, who had come to Troy to try to recover Helen through diplomatic means. She became pregnant and bore him the son Munitus. Munitus was given to Acamas' grandmother Aethra, who was then a slave to Helen. After the war had ended, Acamas took his son with him. Much later, Munitus was bitten by a snake while hunting with his father in Thrace

Thrace

Thrace is a historical and geographic area in southeast Europe. As a geographical concept, Thrace designates a region bounded by the Balkan Mountains on the north, Rhodope Mountains and the Aegean Sea on the south, and by the Black Sea and the Sea of Marmara on the east...

 and died.

The Iliad

Iliad

The Iliad is an epic poem in dactylic hexameters, traditionally attributed to Homer. Set during the Trojan War, the ten-year siege of the city of Troy by a coalition of Greek states, it tells of the battles and events during the weeks of a quarrel between King Agamemnon and the warrior Achilles...

mentions Laodice as the wife of Helicaon

Helicaon

In Greek mythology Helicaon is the son of Antenor and Theano. His wife Laodice fell in love with Acamas....

, son of Antenor

Antenor (mythology)

In Greek mythology, Anthenor was a son of the Dardanian noble Aesyetes by Cleomestra. He is a counselor to Priam during the Trojan War.-History:He was one of the wisest of the Trojan elders and counsellors...

.

According to other sources she was the wife of Telephus

Telephus

A Greek mythological figure, Telephus or Telephos Telephus was one of the Heraclidae, the sons of Heracles, who were venerated as founders of cities...

, king of Mysia

Mysia

Mysia was a region in the northwest of ancient Asia Minor or Anatolia . It was located on the south coast of the Sea of Marmara. It was bounded by Bithynia on the east, Phrygia on the southeast, Lydia on the south, Aeolis on the southwest, Troad on the west and by the Propontis on the north...

 and son of Heracles

Heracles

Heracles ,born Alcaeus or Alcides , was a divine hero in Greek mythology, the son of Zeus and Alcmene, foster son of Amphitryon and great-grandson of Perseus...

. She accompanied Telephus and his son Eurypylus

Eurypylus

In Greek mythology, Eurypylus was the name of several different people.-Son of Thestius:One Eurypylus was a son of Thestius. He participated in the hunt for the Calydonian Boar, during which he insulted Atalanta and was killed by Meleager.-Son of Euaemon:Another Eurypylus was a Thessalian king,...

 when he traveled to Troy to defend it against the Greeks. As they set foot in Asia Minor

Asia Minor

Asia Minor is a geographical location at the westernmost protrusion of Asia, also called Anatolia, and corresponds to the western two thirds of the Asian part of Turkey...

, Helicaon forced Laodice to marry him and was going to drown Eurypylus in Xanthos

Xanthos

Xanthos was the name of a city in ancient Lycia, the site of present day Kınık, Antalya Province, Turkey, and of the river on which the city is situated...

' Lake. However, Telephus returned just in time to save his wife and son. Telephus decapitated Helicaon and had the latter's face engraved on all Mysian shields with an expression of terror and fear in his eyes. Yet other versions say that Laodice had married Helicaon. When Telephus came she tricked him into believing that the cattle handed down to him by his father Heracles had been stolen by Helicaon, and that she would exact revenge on behalf of Telephus if he would marry her. And so at night she stabbed Helicaon and afterwards married Telephus.

According to Apollodorus

Apollodorus

Apollodorus of Athens son of Asclepiades, was a Greek scholar and grammarian. He was a pupil of Diogenes of Babylon, Panaetius the Stoic, and the grammarian Aristarchus of Samothrace...

 and several other sources, in the night of the fall of Troy Laodice feared she might become one of the captive women and prayed to the gods. She was swallowed up in a chasm that opened on the earth. There is no information on which deity she prayed to but Persephone

Persephone

In Greek mythology, Persephone , also called Kore , is the daughter of Zeus and the harvest-goddess Demeter, and queen of the underworld; she was abducted by Hades, the god-king of the underworld....

 seemed to have provided the chasm. There is no information on what happened after she was swallowed. The assumption is that she was transported alive to Hades

Hades

Hades , Hadēs, originally , Haidēs or , Aidēs , meaning "the unseen") was the ancient Greek god of the underworld. The genitive , Haidou, was an elision to denote locality: "[the house/dominion] of Hades". Eventually, the nominative came to designate the abode of the dead.In Greek mythology, Hades...

.

Yet Pausanias mentions her among the captive Trojans painted in the Lesche of Delphi

Delphi

Delphi is both an archaeological site and a modern town in Greece on the south-western spur of Mount Parnassus in the valley of Phocis.In Greek mythology, Delphi was the site of the Delphic oracle, the most important oracle in the classical Greek world, and a major site for the worship of the god...

, but assumes the Greeks wouldn't have done her any harm, since she was married to the son of Antenor, who was an ally of the Greeks.