[1][2] In 1992, he was among the first batch of 65 Martial Law era martyrs to be honored by having their names engraved on the Wall of Remembrance at the Philippines Bantayog ng mga Bayani memorial.

[1] As a lawyer, Lagman is best remembered for being the legal counsel to many of the labor unions which spearheaded the 1975 La Tondeña Distillery strike,[1] which was one of the first major open acts of resistance against the Marcos dictatorship and an important turning point for the period.

Efforts to find the two in Marcos' various detention centers and military camps produced no results, but Lagman's mother received anonymous call which informed her that the two had been abducted.

[6] He was the brother of Filemon "Popoy" Lagman, the founder of the Partido ng Manggagawa and the Alex Boncayao Brigade who was assassinated in 2001.

Another brother, Edcel Lagman, was a human rights lawyer who served as Minority Floor Leader of the House of Representatives of the Philippines from 2010 to 2012.