Who is Dadash from Daughter of Persia: A Woman's Journey from Her Father's Harem Through the Islamic Revolution and what is their importance?

Dadash is Satti's oldest brother, the eldest child of Shazdeh and Khanom. After her father's death, he assumes authority over her branch of the family, although he is still subject to the authority of his older half-brothers, especially Nosratdoleh. A single or divorced woman could not live alone in Iran, so even as head of the college, Satti lived in her own house within the family compound and consulted Dadash about every decision.