Agustin de Legazpi is a prominent historical figure in the Philippines best known as the leader of the Tondo Conspiracy of 1587–1588, the last native ruler of Tondo, and the last individual to hold the title of paramount ruler in any of the Indianized indigenous Tagalog polities of the Pasig River delta,[1][2] although it had been reduced to little more than a courtesy title by the time of Agustin de Legazpi's execution.
[3] Because the historical sources referring to Agustin de Legazpi were all written by Spanish chroniclers, it is unclear whether he used the title of "Lakan", which was reserved for the paramount ruler of Tondo.
Upon conversion to Roman Catholicism under the new Spanish regime, he is believed to have been sponsored for baptism by Miguel López de Legazpi himself, explaining the similar family names.
As a result of the uncovering of the Tondo Conspiracy, Agustin de Legazpi and Magat Salamat were executed, while Felipe Salonga was sent to exile in South American part of the Viceroyalty of New Spain, for six years.
[4] Aside from his participation in the Tondo Conspiracy of 1587, few definite facts about Agustin de Legazpi's life were documented in 20th-century history textbooks until historian Luciano P. R. Santiago's paper, "The Houses Of Lakandula, Matanda And Soliman (1571–1898)" was published by the Philippine Quarterly of Culture and Society in 1990.