Please find below the solution for: William the Conquerors son built a fortress on a key Northern river in 1080 giving this city its name. This clue was last seen on September 1 2023 in the popular Final Jeopardy TV Game Show. If something is wrong or missing please let us know by leaving a comment below and we will be more than happy to help you out.

William the Conquerors son built a fortress on a key Northern river in 1080 giving this city its name

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