Medieval Islamic Families

The Birth of Mohammed (Iran, about 1315 AD, now in Edinburgh)
According to the Koran, Muslim men were allowed to have as many as four wives, but most men in the Islamic world still had only one wife. In fact, most people in the Islamic empire lived like people had in the Roman Empire and the Sassanian Empire before them: in families with a dad and a mom and a bunch of kids, and sometimes the dad's mother and his unmarried brothers and sisters (the kids' aunts and uncles).
As with earlier times, other people also lived in the house and counted as part of the family. These were mostly slaves or employees. People in the Islamic Empire still didn't make much of a distinction between their families and their businesses.

