Fernando De Mendoza Tte Gobernador De Bsas

Fernando's father was Gonzalo De Mendoza Gobernador Del Rio De La Plata Y Paraguay and his mother was Isabel De Irala.  His maternal grandparents were Gobernador Domingo Martinez De Irala and Agueda Princesa Guarani. He had a half-brother and a half-sister, named Pedro and Maria.

They had two daughters named Juana and Isabel.