He came from a large family of fifteen, which his parents raised in Mexico while living in a one-room shack.
He owned a Mexican restaurant, The Castillo Mexicano, and a laundromat in Brooklyn's Sunset Park neighbourhood. He made Gabby work at his businesses and take accounting classes instead of going to art school like she wanted.
After the Tenth Doctor, Gabby and the Pranavores defeated Cerebravores, the influence of Pranavores made him change his mind and agree to let Gabby go to college. She went on to travel with the Doctor instead. (COMIC: Revolutions of Terror)