Halfdan is a masculine given name of Danish and Norwegian origin, derived from the Old Norse name Hálfdan, meaning "half Danish" — composed of the elements hálfr ("half") and Danr ("Dane"). Originally a nickname for someone of half-Danish heritage, the name became associated with legendary Danish kings.Historical and Legendary ContextIn Norse tradition, Halfdan (Old English: Healfdene, Medieval Latin: Haldānus) was a semi-legendary king of the Danes in the 5th–6th century, belonging to the Scylding (Skjöldung) lineage. According to sources such as the Chronicon Lethrense, Saxo Grammaticus’ Gesta Danorum, and the Ynglinga saga, Halfdan was the son of a king named Fróði. He had brothers named Ro and Skat, whom he killed in his quest for the throne, along with their supporters. Despite initial cruelty, he reigned long and died peacefully in old age. He was the father of two notable sons: Helgi (in Old English called Halga) and Hróarr (in Old English Hroðgar), both of whom succeeded him as kings and feature prominently in the Old English epic Beowulf — Halga as a minor figure and Hroðgar as the Danish king who aids the hero.Linguistic Variants and UsageThe name has several cognate forms. The standardized Old Norse form is Hálfdan, while Norwegian usage includes the variant Halvdan. Though historically related to royalty and legend, the name has been used in modern Scandinavia, particularly in Denmark and Norway, as a traditional but uncommon choice. It is cited as one of the Viking Age names that have persisted into contemporary times.Key FactsMeaning: "Half Danish"Origin: Old NorseType: First nameUsage Regions: Danish, Norwegian