The ruling position of Jarl or Earl of Orkney was heritable. It is named after the Finnish mathematician Jarl Waldemar Lindeberg. Swedish actor Ola Rapace joined the cast for series 3, as Jarl Harald Bloodhair. The Hotel Birger Jarl is located in Stockholm's Norrmalm neighborhood. Her brother Cnut then arranged a marriage for her with Ulf, Jarl of Orkney. Only one person ever held the title of Earl (or Jarl) in Iceland. In the Middle Ages the title of jarl (earl) was the highest title of nobility. According to other legends it is no other than Birger Jarl standing guard. The Jarl of Orkney and Shetland, however, claimed supremacy. They went to Orkney, again imposing themselves as overlords over Jarl Thorfinn. When he arrived, the Haakon Jarl was facing a revolt. In later medieval Norway, the title of "jarl" was the highest rank below the king. The last "jarl" in mainland Norway was appointed in 1295. There is a main guizer who is dubbed the "Jarl" (pron. "yarl"). Thorfinn married Ingibiorg Finnsdottir, daughter of Finn Arnesson, Jarl of Halland.