His father died when he was a child. In 1862 he began his studies at a Secondary School but he had to interrupt them because of a serious problem in his eyes. In the 70's he started university studies in Santiago. In 1874, he married Amalia Rosina Sánchez and had several children. That same year he collaborated with the newspaper El Heraldo Gallego and a bit later he would become the editor. After El Heraldo Gallego had disappeared in 1880, Lamas Carvajal collaborated in the liberal newspaper El Eco de Orense being again the editor three years later. He also founded the weekly newspaper O Tío Marcos d'a Portela, where he published most of his work, sometimes without signing it.He worked very hard at press and literature. He was the most important journalist in Galicia in the 20th century.His literature was always based on defending his country and Galician people and customs.
In 1871 he published La monja de San Payo. It was a part of the volume Colección de Leyendas de Galicia escritas en verso and was dedicated to his uncle Pedro Carvajal. It was based on fact when in 1830 a nun of the Convent of St Payo in Santiago died. She had fallen down at Plaza de la Quintana when she was going to meet her lover.Flores de Ayer (1871) consists of 22 poems written in Castilian language, which are dedicated to his mother.El Cancionero del Miño. Leyendas y tradiciones de Orense was published in Ourense in 1872. It is composed of four legends, two of them are imaginary and the other two are real.Las dos perpetuas was published in 1874 and is dedicated to Dr Romasanta Guede, who treated his eye disease.Espiñas, follas e frores is a collection of poems. They are divided into two groups titled Ramiño primeiro and Ramiño segundo, where there are poems dedicated to his son and his mother.In 1875, he published Cartas ós Gallegos and three years later Desde la reja. Cantos de un loco. This book is written both in Castilian and Galician language.In 1880, he published Saudades Gallegas with 19 poems adding two more in the second edition. Gallegada. Tradiciôs, costumes, tipos e contos da terriña was published in 1887. It consists of 19 narrations, most of which had already appeared in O Tío Marcos d'a Portela.O Catecismo d?o labrego was first published in O Tío Marcos in 1888. It is his most popular book being very well sold in Galicia. There were even 18 editions of this book.A musa d'as aldeas consisted of 28 poems, most of which had already been published in O Tío Marcos too.Mostacilla. Versos humorísticos is a selection of the most important compositions that had been inserted in El Eco de Orense. The poems are written in Castilian language and describe characters and political failures in Ourense at that time (late 19th century).
The Galician Academy dedicated him ?O Día das Letras Galegas? (The Day of the Galcian Letters) in 1972.