Pictures and info on Offa's Dyke on www.cpat.org.ulc/offa English Heritage say that it "may have been a much earlier prehistory trackway", but the structure is similar to other Anglo-Saxon sites and very unlike Hadrian's Wall, for instance. No mention of the Mercian Kings of the 500-600 period making any kind of division or fortification - so I say the answer is still "False" - wrong century.

- jeanie