Stuart's "Royalty For Commoners" (202:39): Count in the Nordgau and Northern Hamelant; Count in the Ortengau and Argau, Duke of Friesland in Hamelant; captured by the Norsemen and ransomed by his mother, Evesna; murdered, after 898, while in pursuit of Walcher, Count of Friesland, son of Gerold de Fries.