(died 1549) Dominican martyr, born Saragossa, Aragon, Spain; died Tampa Bay, Florida. In 1514 he came to America at the head of a band of Dominican missionaries and settled among the Indians of Vera Paz, Central America. He composed many religious hymns in the Zapote language. Returning to Spain, he obtained a vessel to accomplish his mission in Florida. When, he arrived at the Bay of Tampa, Father Cancer went ashore and was killed by savages.