Alvarsson is a Swedish patronymic surname, meaning "son of Alvar." The personal name Alvar derives from the Old Norse Alfarr (compare alfr "elf" + herr "army, warrior"), giving it the sense of "elf warrior."As a patronymic, Alvarsson follows the traditional Scandinavian naming convention where -sson denotes descent; such surname forms became fixed in Sweden in the late 19th century. Thus, bearers of Alvarsson are part of a wide swath of Scandinavian surnames reflecting father-to-son lineage, common across Sweden, Denmark, Norway, and Iceland.Though less common than its Danish or Norwegian counterparts (Alvesen, Aalvesen), Alvarsson has maintained moderate usage in Sweden. The cognate patronymic Alværsson exists in Norway; variant forms include Alvarsson itself and Alversson. The forebears distribution data is limited per web sources but indicates Sweden as the primary region.Meaning: son of Alvar, elf warriorOrigin: Old Norse-Alvar (Alfarr) via patronym by in -ssonType: Patronymic Swedish surname; 29th most common? Not well represented in global surname significanceUsage: Primarily Sweden; minor in other Scandinavian landscapes