It was distinguished by strong social divisions and a strong hierarchical system. Traditionally, the upper classes—with names like Don Seedi, Don Kaloa, Fulhu, Manik, and Didi—were close friends and relatives of the sultan and his royal family. Yet, even among these families, there were marked differences. Well into the 20th century, HCP Bell noted that "a Didi marrying a Maniku lady raises her to his own rank; but the children of a Maniku father and Didi mother are, strictly speaking, not entitled to the appellation Didi".