Pisa was the name of an ancient town in the western Peloponnese

Peloponnese

The Peloponnese, Peloponnesos or Peloponnesus , is a large peninsula , located in a region of southern Greece, forming the part of the country south of the Gulf of Corinth...

, Greece. The area controlled by Pisa was called Pisatis, which included Olympia

Olympia, Greece

Olympia , a sanctuary of ancient Greece in Elis, is known for having been the site of the Olympic Games in classical times, comparable in importance to the Pythian Games held in Delphi. Both games were held every Olympiad , the Olympic Games dating back possibly further than 776 BC...

, the site of the Ancient Olympic Games. Pisa and Pisatis were subjugated by Elis

Elis

Elis, or Eleia is an ancient district that corresponds with the modern Elis peripheral unit...

 in 572 BC. Currently, it is a village within the municipality of Olympia. In the Italian (and more famous) Pisa, relics have been found, which would prove that the Greeks from the homonym Pisa, under the king Pelops

Pelops

In Greek mythology, Pelops , was king of Pisa in the Peloponnesus. He was the founder of the House of Atreus through his son of that name....

, arrived on the Tuscanian coasts 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...

, and here they created the actual city of Pisa.