There is no prominent or widely recognized individual specifically known as the most important female member of the Phiri clan in charge of the rains. The Phiri is a common surname found in multiple African countries, including Zambia, Malawi, and Zimbabwe, among others. The role of governing the rains or any specific authority may vary among different clans and cultures. Therefore, it is not possible to identify a singular female individual who holds such a position universally.
