G.R. No. L-953 - El Pueblo de Filipinas vs. Marcaida

On July 15, 1946, the People’s Court tried Pedro Marcaida for treason under Count No. 3 of the information, found him guilty, and sentenced him to reclusión perpetua, a ₱10,000 fine, and costs.
Marcaida appealed (G.R. No. L-953), assigning three errors: (a) insufficient proof of his Filipino citizenship and loyalty; (b) undue credit given to prosecution witnesses; and (c) erroneous finding of guilt on Count No. 3.

Defense contested translation of the Tagalog phrase “Taga Lopez,” arguing the record did not prove Marcaida was “nacido en Lopez” and thus failed to establish Filipino citizenship under Article IV of the 1935 Constitution.
The prosecution relied on Section 2 of the Jones Law (Aug. 29, 1916) and Article 4 of the Organic Act (July 1, 1902) to presume citizenship for those who on April 11, 1899 were Spanish subjects residing in the Philippines or their post-1899-born children, absent evidence of a choice to retain Spanish or foreign citizenship.
No birth certificate, parental nationality evidence, or proof of any election to retain Spanish citizenship was offered. The lower court inferred Marcaida was born before November 15, 1935, and therefore outside the Constitution’s ten-year youth exception.

Four prosecution witnesses—Illuminada Zurbano, Marianito Catan, Domingo Villasoto, and Luisa de Mondragon—testified that Marcaida, wearing civilian clothes but bearing a revolver, organized or joined a pro-Japanese group (“Yoin”/Ganap) and arrested guerrillas (e.g., Epimaco Zurbano, Sixto Targa), delivering them to the Japanese garrison.
Their accounts were mutually contradictory on essential points:

Attire (camisa china vs. polo shirt) and revolver placement (left hip vs. right hip; hidden vs. exposed).
Identity and number of companions (San Juan, Enguanso, Cortes, Villaruz; two vs. four persons).
Number and presence of bystanders (one witness vs. some eighty spectators) and presence of co-witnesses on site.

The defense offered no counter-evidence; the prosecution introduced no documents or official records corroborating citizenship or formal organizational membership.

Whether Marcaida’s Filipino citizenship—and thus his allegiance to the Commonwealth government—was sufficiently proven to render him liable for treason.
Whether the irreconcilable contradictions among the prosecution witnesses deprived the tribunal of reliable proof of an overt act of treason.
Whether, under applicable law, an unproven or foreign status bars conviction for treason committed before the 1945 amendment extending treason liability to resident aliens.