Sylvia Carla Santiago was the daughter of Dominic Santiago and Maria Flores, sister to Benedicto Santiago. The youngest of the two Santiago siblings, Sylvia was born just before the landing at Aspho Point and Dom's eighteenth birthday. She was born earlier than expected, and Dom missed Maria giving birth. Her middle name was named after Carlos, for the female version of Carlos is Carla. She continued to live with her parents and brother in Jacinto for a couple of years until they moved into a house in Ephyra.