[Thanks to Paul Hockie on Northumbria list for this].
Not sure who may have seen this. I believe it may be sponsored by the EU with a view to having a single point of access to all EU based archives. The current selection is a bit hit and miss – the UK local authority archives all begin with “W” – but someone may be lucky.
Web site address is: http://www.archivesportaleurope.net/home
Their home page reports: “You can search in 48,857,529 descriptive units linked to more than 141,000,000 digital objects from 422 institutions.”