In which city did King Suddhodana reign?

King Suddhodana, the father of Siddhartha Gautama, who later became known as Buddha, reigned in the ancient city of Kapilavastu. Kapilavastu was the capital of the Shakya kingdom, located in what is now the southern region of Nepal and northern India. This city is an important site in Buddhist traditions, as it is closely associated with the early life of Buddha before he embarked on his journey towards enlightenment.