Don Justo dela Cruz (b. abt 1780). In 1819, Don Justo de la Cruz held a variety positions. (Freycinet, 1819). He was a Captain of the First Company of the Spanish Infantry, Secretary to the Governor and the Administrator of the Royal College of St Jean de Letran (aka Collegio San Juan de Letran), established in 1669 by Father Diego Luis de San Vitores). (Yamashita, 2009)
During Dumont d'Urville's visit to Guam in 1828, Don Justo told d'Urville that he was a direct descendant of Matapang.(Farrell, 2011) He is also known as the "last pure Chamorro," from Captain Louis de Freycinet of the U'ranie. (Monning, 2007)
However so and in contrast, according to Paul Carano, "it was recorded that the last native believed to be a pure blooded Chamorro died [in 1826]." (Carano, 1975)
References:
Paul Carano. 1975. Guam at a Glance. Guam Recorder, 5(1), pg.54. Guam: University of Guam
Don A. Farrell. 2011. History of the Mariana Islands to Partition, pg.239. Commonwealth of the Northern Mariana Islands Public School System.
Laurel A. Monnig. 2007. Proving Chamorro: Indigenous Narratives of Race, Identity, and Decolonization on Guam. Urbana, IL: University of Illinois
Louis Claude de Freycinet. 1819. An Account of the Corvette L'Uranie's Sojourn at the Mariana Islands.
Velma Yamashita, MA, ' Colegio de San Juan de Letrán', referenced August 1, 2012, © 2009 Guampedia™, URL: http://guampedia.com/spanish-era-colegio-de-san-juan-de-letran/