Kjellsson is a Swedish surname that follows the traditional patronymic naming pattern, meaning "son of Kjell".The name Kjell itself is a Swedish variant of Ketil, which comes from the Old Norse name Ketill. The Old Norse word ketill originally meant "kettle" or "cauldron", and later also acquired the meaning "helmet". This association with a cauldron ties to ancient Scandinavian sacrificial rituals, where a ketill was used to catch the blood of sacrificed animals.As a patronymic surname, Kjellsson is analogous to other Scandinavian names like the Danish Kjeldsen (also from Kjell), though ultimately all trace back to the Old Norse root. Surnames ending in -sson are especially common in Sweden and were historically formed by adding -son to the father's given name. This system was widely used before the adoption of hereditary family names, though Kjellsson may still be in use today.According to surname distribution data from Forebears, the name Kjellsson is most frequently found in Sweden, reflecting its linguistic and cultural origins.Meaning: Son of Kjell (patronymic)Origin: Old Norse Ketill ("kettle, cauldron; helmet")Type: SurnameUsage regions: Sweden