7. What, for instance, to make of the fourth/fifth century ‘Anglo-Saxon’ pot found at the site of the Roman town of Forum Hadriani near Voorburg-Den Haag (De Jonge 2006)? Is the pot itself an import or does it point to the arrival of immigrants from the northern Netherlands who settled in the wholly or largely deserted urban area and thus formed a link in the (unbroken?) chain of local occupants? The latter interpretation is the more likely as there is further evidence of Frisian-Anglo-Saxon immigration in the coastal part of the province of Zuid-Holland. Waasdorp & Eimermann (2008) envisage a sparse remnant population in the fourth and fifth centuries which was augmented by an influx of ‘newcomers’ of ‘Frisian’ stock in the late fifth century. They date the Anglo-Saxon urns from Solleveld (Waasdorp & Eimermann 2008, 83 and 125) to the sixth century, which for an urn like Peeters VIII strikes us as rather late. They date the fragmentary urns of Tritsum ware very broadly: fourth to seventh centuries