On his way back from Rome Æthelwulf again stayed with King Charles the Bald, and may have joined him on a campaign against a Viking warband. On 1 October 856 Æthelwulf married Charles's daughter, Judith, aged 12 or 13, at Verberie. The marriage was considered extraordinary by contemporaries and by modern historians. Carolingian princesses rarely married and were usually sent to nunneries, and it was almost unknown for them to marry foreigners. Judith was crowned queen and anointed by Hincmar, Archbishop of Rheims. Although empresses had been anointed before, this is the first definitely known anointing of a Carolingian queen. In addition West Saxon custom, described by Asser as "perverse and detestable", was that the wife of a king of Wessex could not be called queen or sit on the throne with her husband – she was just the king's wife.