No evidence that this person ever published using his real name Francisco Porrúa or nicknmame Paco Porrúa

El fin de la infancia, 1986: t.p. (Luis Domènech)

Wikipedia, 3 October 2014 (Francisco Porrúa; Paco Porrúa; born 1922, Corcubión, La Coruña; Spanish editor and translator of fantasy and science fiction; Argentine nationality; translated under various pseudonyms: Luis Domènech, Ricardo Gosseyn, Francisco Abelenda, F.A.)

Luis Domènech is a pseudonym of Francisco Porrúa (1922- ) which he used for translations of science fiction and fantasy.