Mazu is the goddess of the sea and the protector of sailors, fishermen and all who travel the water, venerated with great intensity along the south-eastern coast of China, in Taiwan, and throughout the maritime Chinese world of South-East Asia and beyond. She is understood to have begun as a real woman, Lin Moniang, born in the tenth century on the island of Meizhou off the coast of Fujian, a girl said to have been able to swim, to foresee weather, and to rescue those in danger at sea, and who, in the accounts of her life, died young, in some versions while trying to save her father and brothers from a storm. After her death she was believed to continue to appear to sailors in peril, guiding ships to safety, and her local cult grew steadily. Mazu's rise from a local Fujian cult to a state-sponsored goddess is documented in an unusually well-preserved sequence of imperial honours: rulers from the Song dynasty onward granted her temple plaques and escalating titles, moving from Lady to Consort, a process traditionally credited with fourteen separate grants during the Song alone.
The Yuan-dynasty ruler Kublai Khan conferred the title Tianfei, Celestial Consort, in 1278, tying her cult to the security of the state's grain-shipping routes, and by 1684 the Qing Kangxi Emperor had elevated her further still, to Tianhou, Empress of Heaven. This steady accumulation of court titles across more than seven centuries is itself a rare, closely dated record of how a local martyr-saint could be absorbed into the official state pantheon.