Thorfinn Turf-Einarsson, Earl of Orkney
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Thorfinn 'Skullsplitter' Hausakljuv (d. 963) (Old Norse: Þorfinnr hausakljúfr, "skull-splitter") was earl of Orkney. He was son of Turf-Einar. The modern Orcadian beer SkullSplitter is named after him.