According to Fray Juan Pobre in 1602, Sinaro was a Chamorro from the village of Guaco, Rota. Sinaro speared a Spaniard named Sancho after being ridiculed and humiliated by him. Apparently Mågå'låhi Sunama of Tazga was Sancho's master or friend.
Sancho died from his wound and Sunama's family gave him a Chamorri burial. Spears were placed in the ground in front of Sancho's grave as a symbol of alerting the people of Tazga and warning the people of Guaco that they would avenge Sancho's death. Even Mågå'låhi Toca of Guaco denounced Sinaro as a bad person.
As a cultural practice of what seemed to have been a form of Chamorro justice, Sinaro made a trip to Guam to retrieve a tortoise shell, a few fish, and other things to offer Sunama and his family in an attempt to make amends over Sancho's death.
References:
Judith R. Amesbury & Rosalind L. Hunter-Anderson. 2003. Review of Archaeological and Historical Data Concerning Reef Fishing in the U.S. Flag Islands of Micronesia: Guam and the Northern Mariana Islands (Final Report). Western Pacific Fishery Management Council.
Lawrence Cunningham. 1992. Ancient Chamorro Society. Best Press: Hawaii





Part of that research included an on-line survey that was created using surveymonkey.com and was accessible for two week weeks through facebook.com, 671recipes.com, and chamorroroots.com. 22 questions were asked and 111 Chamorros responded.


On January 13, 1873, Doña Dolores sold two ares and twelve and a half centares to Fray Aniceto Ybanez del Carmen for 50 pesos. To the north, east and south of this property were the coconut plantations of Doña Dolores and to the west is the Pigo river. It seems not long after this transaction this particular piece of property thereafter became known as or commonly referred to as the Pigo Cemetery or Pigo Catholic Cemetery. The instrumental witnesses recorded in this transaction were: 1) Mariano de Castro y Torres (aka Mariano Torres Castro), 51 years of age and married; 2) Mariano Fausto y Borja (aka Mariano Borja Fausto), 38 years of age, married and a laborer; and, 3) Juan del Rosario y Flores (aka Juan Flores Rosario), a Peninsular Spaniard, 39 years of age and married.
