Sichfrith Jarl

Sichfrith or Sigfrith (Old Norse: Sigfrøðr), also known as Sichfrith Jarl, was a ninth-century Norse or Norse-Gael Jarl who claimed the kingship of Dublin in 893, but it is unclear if he ever ruled. Later historians have linked him with two individuals of the same name. The first, a Northumbrian Viking who a led a fleet south and landed troops in Wessex in 893, and the second, a King of Jórvík who reigned from 895 until around 899.