Who is Pepín Beltrán from the novel, The Aguero Sisters?

Pepín Beltrán is Reina's lover of twenty-four years. He is married, wears orthopedic shoes, and is an official in the Ministry of Agriculture. When Reina is hit by lightning, Pepín is one of the people who contributes some of his own skin for her skin graft. He is loyal to the ideals of the revolution and remains in Cuba after Reina departs for Miami.