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East-Friesland east of the Lauwers was conquered 50 years later.
It came from the Frisian heart itself.
He became known for his practice of testing his captives - if a captured man could not speak a tricky Frisian sentence - he was thrown overboard, since all Frisians can speak it easily.
De Vries is the most appearing surname in Friesland.
The fact several Viking warrior graves turned out to be not of men but of women, supports this idea.
He assembled a company called the Zwarte Hoop Black Gang.
These houses needed to be profitable, and thus the women must have been economic active within the community.