Based on research by Jerry Delany:
CHRISTENING: Roman Catholic Church Records, St. Augustine Parish Church, Florida, White Baptisms I, 1784-1792, page 253, entry 486. Martin Antonio Magin Eusebio Canovas, born 15 December 1791. Baptized 16 December 1791. Son of Antonio Canovas, and Catalina Mestre, both of Leon, Isla de Menorca. Godparents: Antonio Llambias and Anna Maria Hinsman, both of San Augustin. Priest: Miguel O'Reilly.