Guðnadóttirs
Guðnadóttirs is a common Icelandic patronymic surname. In Iceland, surnames are traditionally formed by taking the given name of the father and adding the suffix "-son" for males or "-dóttir" for females. Therefore, Guðnadóttir literally means "daughter of Guðni". This system of patronymics is a defining characteristic of Icelandic naming conventions. While many Icelanders still use patronymic surnames, there has been a gradual increase in the adoption of family names, often inherited from ancestors. However, Guðnadóttirs remains a prevalent surname throughout Iceland, reflecting the continuation of the traditional naming practice. Individuals with this surname are descendants of a father named Guðni. The prevalence of the name Guðni itself in Icelandic history and culture contributes to the commonality of the Guðnadóttirs surname.