Before 1811, hardly anyone in Friesland had a last name. People called themselves after their father, which was called a patronymic. For example: If a man was called Rindert and his father was called Oebele, Rindert would call himself ‘Rindert Oebeles’. In Friesland, this tradition continued long after the civil registration was introduced in 1811 which forced everyone to take an official last name. They would then be called ‘Jan Rinderts Hulshoff,’ for example.