A possible answer to the question: Why St. Clement?
23 November is the feast of St Clement, the first-century pope and martyr who was, rather incongruously, a favourite saint with Vikings. (He was martyred by being tied to an anchor and thrown into the sea, therefore he is often shown with an anchor, therefore he is the patron of seafarers, and therefore of Vikings. Impeccable logic!) This is only tangentially related to the subject of today's post, but it is one of my favourite Viking facts; it probably accounts for the dedication of St Clement Danes in London, St Clement's here in Oxford, and many churches dedicated to St Clement in the former Danelaw.