Vampire City by Paul Feval

[Vampire City] To save her friends from the dreaded vampire lord Otto Goetzi, gothic author Ann Radcliffe and her fearless vampire hunting companions, Merry Bones the Irishman, Grey Jack the faithful old servant, the revenge-driven Doctor Magnus Szegeli, and Polly Bird, one of the vampire's earlier victims, launch an all-out attack on Selene, the Vampire City... (from Amazon.com)