In both the Nordic countries and Russia, patronymics are quite common (e.g. Leif Eriksson = Leif son of Erik the Red; Tsar Pavel Petrovich = Tsar Paul, son of Peter III).
Make it so that with any POD after 793 the Anglosphere uses patronymics in naming such that say, the Duke of Cambridge would be William Charles-son or such to the paparazzi.
Make it so that with any POD after 793 the Anglosphere uses patronymics in naming such that say, the Duke of Cambridge would be William Charles-son or such to the paparazzi.