2. Amarna was not the original name of Egypt's new capital. In fact, its name looks much like the name of the city's founder, Amenhotep IV, who changed his name early in his reign. What was his new name?
From Quiz Tales of Amarna
Answer:
Akhenaten
Amenhotep IV, a younger son of Amenhotep III, was not in line to be pharaoh - his older brother Thutmose was the crown prince. When Thutmose died at a fairly young age, however, Amenhotep became his father's heir. In 2014 it was announced that evidence had been uncovered that suggested that both ruled together for eight years before Amenhotep IV became pharaoh in his own right. For five years he ruled Egypt and began building temples to the god Aten (solar disk) in the capital city; then he changed his name to Akhenaten, which means "Effective for Aten", and began work on a new capital city called Akhetaten, or "Horizon of the Aten". The modern name of the city, Amarna, is taken from the Beni Amran tribe that lived in the area in the past.