He studied Teaching and devoted himself to teaching during his life. Just as his brother Antonio, he worried about all that had something to do with Galicia. He founded the newspaper Diario de Galicia and the group Folklore Gallego, directed by Emilia Pardo Bazán.
Francisco de la Iglesia collaborated in the magazine Galicia. Revista universal de este reino.As poet, he published many poems in the newspapers of the moment.Besides, he also wrote the theatre plays A fonte do xuramento, Gallegos. ¡A Nosa terra! Escena oral en verso e nun auto and Os Ártabros. Escena orfeónica. He wrote a comedy of customs and manners as well, titled As trulas de San Xuan, ou as enguespas da mocedade nas aldeas de Galicia.Francisco de la Iglesia also left a rough draft of the music comedy O último brindes. Zarzola nun auto and a drama about the Carlist War titled O bordón salvador. Drama en dous autos.