Final answer:
Francisco Vásquez de Coronado searched for the city of Quivira in the Oklahoma panhandle in 1541 during his expedition in search of golden cities in the north.
Step-by-step explanation:
The individual who sought the fabled city of Quivira while traveling through what is today known as the Oklahoma panhandle in 1541 was Francisco Vásquez de Coronado. Originating from a noble family and serving as the governor of Nueva Galicia, Coronado heard rumors of a wealthy city to the north, described as being laden with gold. His extensive expedition to find Quivira, which spanned from 1540 to 1542 and covered territories of the present-day southwestern United States, was ultimately unsuccessful, leaving Coronado bankrupt and without having found the promised riches.