Magnússonar
Magnússonar is the Icelandic plural form of the patronymic Magnússon, meaning “the Magnússons” or “sons of Magnús.” In Icelandic naming practice, Magnússon is not a fixed family surname but a patronymic formed by taking the father's given name (Magnús) and adding -son. As a result, Magnússonar refers to multiple individuals who bear that patronymic at a given time, rather than to a single family lineage.
The given name Magnús is of Old Norse origin and commonly interpreted as meaning “the mighty” or
In everyday Icelandic usage, people are typically addressed by their given name followed by their patronymic,