The only preserved example of the variant Blakumen of the ethnonym was an inscription on a runestone in the Sjonhem cemetery in Gotland in Sweden. The forms of the runes on the memorial stone suggest that it was raised in approximately 1050 AD. According to its inscription, a Varangian couple named Hróðvísl and Hróðelfr set up the stone in memory of one of their sons, Hróðfúss, who had been treacherously killed by Blakumen while traveling abroad. Although the inscription does not contain more information about the crime, Spinei expands on the inscription, arguing that Hróðfúss was murdered by Vlachs in the regions east of the Carpathian Mountains. Curta proposes that Hróðfúss was a merchant traveling towards Constantinople, who was attacked and killed by Vlachs north of the Lower Danube. Jesch likewise suggests that Hróðfúss was a merchant on a voyage abroad, and assumes that he was murdered by local merchants who betrayed his trust. Jesch translates Blakumen as Vlachs, confronting their treachery with their untrustworthiness as claimed by Kekaumenos. Jesch also allows for the possibility that the term may have meant black men, in which case the meaning is unclear. Pritsak refuses to identify the Blakumen in the inscription with Vlachs, instead stating that they were Cumans, whose migration towards the westernmost regions of the Pontic steppes began around the time when the memorial stone was erected. Spinei counters this view on account of the fact that several mentions of the Blakumen or Blökumen (for instance in the Eymund's Saga) occur in contexts taking place decades before the earliest appearance of the Cumans in the Pontic steppe. Spinei also says that if understood as meaning Black Cumans, then the term is not concordant with the Varangian ethnic terminology (derived from either Germanic or East-Slavic naming traditions), that it is not attested in mirror forms in other languages (such as *cumani nigri in Latin or *mauro Koumanoi in Greek), and that the juxtaposition of a Scandinavian adjective and a proper name of Greek or Latin origin (at the expense of the German Walven designating Cumans) to produce Blakumen (black Cumans) and Blokumannaland (the land of the black Cumans) is highly improbable.