 The Icelandic system, formerly used in much of Scandinavia, does not use family names.A person's last name indicates the first name of their father (patronymic) or in some cases mother (matronymic).Many common family names in other Scandinavian countries are a result of this naming practice, such as Hansen (son of Hans), Johansen (son of Johan) and Olsen (son of Ole/Ola), the three most common surnames in Norway.