The basis of Roman society was the family or 'familia', headed by the pater familias who had complete control. Extended families formed gentes which acted as voting blocks. Poorer citizens were linked to wealthy patrons through clientela relationships of patronage. Respect for tradition and boosting family glory were important Roman values. Society was divided into the patrician nobility and plebeian commoners. Through secessio strikes, the plebeians gained political concessions over time that reduced patrician control of government.