Gritty historical realism in Key's Cupboard at The Dabbler this week, where I present a reconstruction, based upon impeccable source material, of an episode in the life of Franz Liszt. The reader is transported, as if by magic, to nineteenth-century Rome, and an assignation between the newly-ordained Abbé Liszt and his Russian-born lover, Princess Carolyne von Sayn-Wittgenstein…