[2] He was a law school classmate of Fidel Castro.
[2] Jeronimo's father, Lim Cheon-taek (1903–1985), left Korea in hope of a better life to go to Mexico.
[4] Jeronimo worked with Che Guevara in pushing forth the Cuban Revolution.
[3] Jeronimo became the Chief Agent at the National Revolutionary Police Force.
Some have labeled Jeronimo as Cuba's Ahn Chang-ho.