Guerrero began teaching drawing at the age of sixteen and later taught at the
Academia de Dibujo y Pintura as assistant to his fellow-winner Rocha, who was now its interim professor and director, together with Agustin Saez, after Nicolas Valdez went back to Spain in early 1857. He also began teaching at the
Instituto de Mujeros, and several other schools. He also gave private lessons, mainly to sons and daughters of prominent families in and around Manila. Among his students were painter
Juan Luna and architects
Juan M. Arellano and
Andrés Luna de San Pedro. Guerrero's home in Ermita became a gathering place for artists and writers, including
Fabián de la Rosa,
Epifanio de los Santos, and
Jaime C. de Veyra, and students from the
Colegio de Nuestra Señora de Guia, a school where his sister-in-law, Corinta Ramirez, was principal. Guerrero gave them advice and criticism there. Guerrero himself painted works of a religious nature and everyday scenes and events. Not many of these have been preserved. Examples of paintings from the religious genre are
Nuestra Señora de Guia,
Dolorosa,
Santa Veronica de Julianus,
Saint John the Baptist (1886) and
San Felix de Cantalicio. Examples of paintings of a non-religious nature are
Chinese Vendor of Tsin-Tsao, ''River's Bend
and Scene at a Brook
, all three of which were on display at the Louisiana Purchase Exposition in 1904 in the American city of St. Louis. Other works by him include The Bride
and Bodegon'' (1877), which was once on display in the
National Museum of Fine Arts, located in Manila. Guerrero also drew 35 of the 253 illustrations in
Flora de Filipinas by friar Manuel Blanco. ==Personal life==